Vulnerability in Versa Networks Sase Client For Windows
CVE-2025-34290
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.001 (1.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 1.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000
Affected products
- Versa Networks Sase Client For Windows — versions 7.8.7
- Versa-Networks Sase Client
Weakness classification (CWE)
References
- security-portal.versa-networks.com/emailbulletins/69421e33d03aafc8e5bdaf21 (vendor-advisory, patch, Vendor Advisory)
- www.vulncheck.com/advisories/versa-sase-client-for-windows-arbitrary-file-delet… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2025-34290?
- CVE-2025-34290 is a high-severity vulnerability in Versa Networks Sase Client For Windows, classified under CWE-250. CVSS score: 7.8/10. Published 2025-12-20.
- How severe is CVE-2025-34290?
- High severity. CVSS v3 base score is 7.8 out of 10.