CVE-2025-34290CWE-250CWE-367

CVE-2025-34290

High · published December 21, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
1.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00107 · 1.1th percentile
Weaknesses
CWE-250 · Execution with Unnecessary Privileges; CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition
Published
2025-12-21T01:15Z
Affected products (1)
ProductVersionsFixed in
versa-networks/sase_client≥ 7.8.7, < 7.9.57.9.5
References (2)
EPSS history
Timeline
  • 20 DEC 20:01Z
    Versa SASE Client for Windows < 7.9.5 Arbitrary Folder Deletion Leading to Local Privilege Escalation
    cvelistv5