CVE-2025-34290: Versa SASE Client for Windows < 7.9.5 Arbitrary Folder Deletion Leading to Local Privilege Escalation

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-20 · updated 2026-10-07
Weakness: CWE-250

Description

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 for Windows: from 7.8.7 before 7.9.5 — fixed in 7.9.5

How to fix

Upgrade to a fixed version: Versa Networks SASE Client for Windows 7.9.5. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2025-34290 or the next vulnerability affects your stack