CVE-2026-2339
📋 TL;DR
This vulnerability allows attackers to execute arbitrary commands on Liderahenk systems without authentication. It affects all Liderahenk installations before version 3.4.0, potentially enabling remote code execution and privilege escalation.
💻 Affected Systems
- TUBITAK BILGEM Software Technologies Research Institute Liderahenk
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining root/admin privileges, installing persistent backdoors, and accessing sensitive data across the network.
Likely Case
Remote code execution leading to data theft, lateral movement within the network, and deployment of ransomware or other malware.
If Mitigated
Limited impact if network segmentation and strict access controls prevent external access to vulnerable systems.
🎯 Exploit Status
CWE-306 indicates missing authentication, making exploitation straightforward once the vulnerable endpoint is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v3.4.0 and later
Vendor Advisory: https://www.usom.gov.tr/bildirim/tr-26-0087
Restart Required: Yes
Instructions:
1. Download Liderahenk v3.4.0 or later from official vendor sources. 2. Backup current configuration and data. 3. Stop Liderahenk services. 4. Install the updated version following vendor documentation. 5. Restart services and verify functionality.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to Liderahenk management interfaces using firewall rules
iptables -A INPUT -p tcp --dport [Liderahenk_port] -s [trusted_network] -j ACCEPT
iptables -A INPUT -p tcp --dport [Liderahenk_port] -j DROP
Application Layer Filtering
allImplement WAF rules to block suspicious command injection patterns
🧯 If You Can't Patch
- Isolate vulnerable systems in a separate network segment with strict access controls
- Implement multi-factor authentication and network monitoring for all access to Liderahenk systems
🔍 How to Verify
Check if Vulnerable:
Check Liderahenk version via web interface or configuration files. If version is below 3.4.0, system is vulnerable.Check Version:
Check /etc/liderahenk/version.conf or similar configuration file, or use 'liderahenk --version' if availableVerify Fix Applied:
Confirm version is 3.4.0 or higher and test authentication requirements for all administrative functions.📡 Detection & Monitoring
Log Indicators:
- Unauthenticated access to administrative endpoints
- Unusual command execution patterns in system logs
- Multiple failed authentication attempts followed by successful access
Network Indicators:
- Unusual outbound connections from Liderahenk servers
- Traffic to known malicious IPs or domains
- Anomalous payloads in HTTP requests to Liderahenk
SIEM Query:
source="liderahenk" AND (event_type="authentication_failure" OR cmd="*;*" OR cmd="*|*" OR cmd="*`*" OR cmd="*$(*")