CVE-2026-0872
📋 TL;DR
This vulnerability allows attackers to spoof digital signatures by exploiting improper certificate validation in Thales SafeNet Agent for Windows Logon. It affects organizations using this authentication agent on Windows systems for passwordless logon. Attackers could potentially bypass authentication controls.
💻 Affected Systems
- Thales SafeNet Agent for Windows Logon
⚠️ 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 authentication bypass allowing unauthorized access to Windows systems protected by SafeNet Agent, potentially leading to domain compromise and data exfiltration.
Likely Case
Targeted attacks against specific high-value systems to gain unauthorized access while evading detection through signature validation failures.
If Mitigated
Limited impact with proper network segmentation, monitoring, and additional authentication factors in place.
🎯 Exploit Status
Requires ability to present spoofed certificates to the authentication agent.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.1.3 or later
Restart Required: No
Instructions:
1. Download latest version from Thales support portal. 2. Run installer with administrative privileges. 3. Follow on-screen upgrade instructions. 4. Verify successful installation.
🔧 Temporary Workarounds
Disable passwordless authentication
allTemporarily revert to traditional authentication methods until patched.
🧯 If You Can't Patch
- Implement network segmentation to isolate systems using SafeNet Agent
- Enable additional authentication factors and monitor for anomalous login attempts
🔍 How to Verify
Check if Vulnerable:
Check installed version via Control Panel > Programs and Features or using PowerShell: Get-WmiObject -Class Win32_Product | Where-Object {$_.Name -like '*SafeNet Agent*'}Check Version:
Get-WmiObject -Class Win32_Product | Where-Object {$_.Name -like '*SafeNet Agent*'} | Select-Object Name, VersionVerify Fix Applied:
Verify version is 4.1.3 or higher using same method as vulnerability check.📡 Detection & Monitoring
Log Indicators:
- Failed certificate validation events in Windows Event Logs
- Unusual authentication patterns in SafeNet Agent logs
Network Indicators:
- Unexpected certificate validation requests to authentication servers
SIEM Query:
source="windows_security" AND (event_id=4625 OR event_id=4771) AND process_name="*safenet*"