CVE-2025-34290
📋 TL;DR
This CVE describes a local privilege escalation vulnerability in Versa SASE Client for Windows where an authenticated local attacker can delete arbitrary directories with SYSTEM privileges. By exploiting a race condition combined with symbolic link manipulation, attackers can delete protected system folders and achieve SYSTEM-level execution via MSI rollback techniques. Only Windows systems running affected Versa SASE Client versions are vulnerable.
💻 Affected Systems
- Versa SASE Client for Windows
⚠️ 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 with SYSTEM privileges, allowing installation of persistent malware, credential theft, and full control over the Windows system.
Likely Case
Local privilege escalation from standard user to SYSTEM, enabling lateral movement within the network and persistence establishment.
If Mitigated
Limited to local authenticated users only; network segmentation and proper endpoint controls reduce lateral movement risk.
🎯 Exploit Status
Exploitation requires local authenticated access and involves race condition exploitation with symbolic link manipulation. The technique is well-documented in security research.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 7.9.4
Vendor Advisory: https://security-portal.versa-networks.com/emailbulletins/69421e33d03aafc8e5bdaf21
Restart Required: Yes
Instructions:
1. Download latest Versa SASE Client version from official vendor portal. 2. Uninstall current vulnerable version. 3. Install updated version. 4. Restart the system.
🔧 Temporary Workarounds
Disable audit log export functionality
windowsRemove or restrict access to the audit log export feature that triggers the vulnerable service communication.
Consult Versa documentation for specific configuration changes to disable audit log exports
Restrict local user privileges
windowsImplement least privilege principles to limit which users can run the Versa SASE Client.
Use Group Policy to restrict application execution to trusted users only
🧯 If You Can't Patch
- Implement strict endpoint controls to prevent unauthorized local user access
- Monitor for suspicious file deletion activities in protected system directories
🔍 How to Verify
Check if Vulnerable:
Check Versa SASE Client version in Windows Programs and Features or via 'versa-client --version' command if available.Check Version:
wmic product where name="Versa SASE Client" get versionVerify Fix Applied:
Verify installed version is 7.9.5 or higher and test audit log export functionality for proper privilege handling.📡 Detection & Monitoring
Log Indicators:
- Unusual file deletion events in C:\Config.msi or other protected directories
- Multiple audit log export attempts from non-admin users
- SYSTEM privilege file operations initiated by Versa SASE service
Network Indicators:
- Local service communication patterns between Versa client and privileged service
SIEM Query:
EventID=4663 AND ObjectName LIKE '%Config.msi%' OR ProcessName LIKE '%versa%' AND AccessMask='0x10000'