CVE-2025-34290: Versa-Networks Sase Client

High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days.

Versa SASE Client for Windows versions released between 7.8.7 and 7.9.4 contain a local privilege escalation vulnerability in the audit log export functionality. The client communicates user-controlled file paths to a privileged service, which performs file system operations without impersonating the requesting user. Due to improper privilege handling and a time-of-check time-of-use race condition combined with symbolic link and mount point manipulation, a local authenticated attacker can coerce the service into deleting arbitrary directories with SYSTEM privileges. This can be exploited to delete protected system folders such as C:\\Config.msi and subsequently achieve execution as NT AUTHORITY\\SYSTEM via MSI rollback techniques.

Affected products

• Versa-Networks Sase Client: from 7.8.7, before 7.9.5 (fixed in 7.9.5)

Published 2025-12-20. Last modified 2026-10-07.