Description
A stack-based buffer overflow vulnerability in Fireware OS's VPN Network Access Enforcement process allows an authenticated mobile VPN user to create a denial of service condition and potentially execute arbitrary code as an unprivileged process by sending a specially crafted request.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| WatchGuard | Fireware OS | 2025.1 – < 2026.4, 12.9 – < 12.12.4 | 2026.4 |
Advisories 1
- WID-SEC-2026-4209 WatchGuard Fireware OS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 27, 2026
References
- https://psirt.watchguard.com/CVE-2026-113881 vendor-advisory