CVE-2025-22391
📋 TL;DR
CVE-2025-22391 is an improper access control vulnerability in SigTest software (Ring 3 user applications) that allows authenticated local attackers to escalate privileges. This affects systems running SigTest versions before 6.1.10. Successful exploitation requires user interaction and high complexity attack vectors.
💻 Affected Systems
- SigTest
⚠️ 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
Complete system compromise where an authenticated local user gains administrative privileges, potentially leading to data theft, system manipulation, or persistence mechanisms.
Likely Case
Limited privilege escalation within user context boundaries, potentially allowing access to restricted files or processes but not full system control.
If Mitigated
Minimal impact with proper access controls, user awareness training, and limited user privileges preventing successful exploitation.
🎯 Exploit Status
Requires authenticated user, local access, user interaction, and high complexity attack vectors according to description.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.1.10
Vendor Advisory: https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01327.html
Restart Required: Yes
Instructions:
1. Download SigTest version 6.1.10 or later from official Intel sources. 2. Stop all SigTest processes. 3. Install the updated version. 4. Restart the system to ensure proper loading of patched components.
🔧 Temporary Workarounds
Remove SigTest
allUninstall SigTest if not required for operations
sudo apt remove sigtest
sudo yum remove sigtest
Use system package manager or uninstaller
Restrict User Privileges
allImplement least privilege principle to limit potential damage from escalation
🧯 If You Can't Patch
- Implement strict access controls and monitor for unusual privilege escalation attempts
- Isolate systems running vulnerable SigTest versions from critical infrastructure
🔍 How to Verify
Check if Vulnerable:
Check SigTest version: sigtest --version or examine installed package versionCheck Version:
sigtest --versionVerify Fix Applied:
Confirm version is 6.1.10 or later: sigtest --version | grep -E '6\.1\.(10|[1-9][0-9]+)'📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- SigTest process spawning with elevated privileges
- Access violations in system logs
Network Indicators:
- Local privilege escalation typically has minimal network indicators
SIEM Query:
Process Creation where Parent Process contains 'sigtest' AND Integrity Level changed