CVE-2022-25291: WatchGuard Fireware

High severity, CVSS 8.8. EPSS: 1.8% chance of exploitation in the next 30 days.

An integer overflow in WatchGuard Firebox and XTM appliances allows an authenticated remote attacker to trigger a heap-based buffer overflow and potentially execute arbitrary code by initiating a firmware update with a malicious upgrade image. This vulnerability impacts Fireware OS before 12.7.2_U2, 12.x before 12.1.3_U8, and 12.2.x through 12.5.x before 12.5.9_U2.

Affected products

• WatchGuard Fireware: from 12.0.0, before 12.1.3 (fixed in 12.1.3); from 12.2.0, before 12.5.9 (fixed in 12.5.9); from 12.7.0, before 12.7.2 (fixed in 12.7.2); version 12.1.3 only; version 12.5.9 only; version 12.7.2 only

Published 2022-02-24. Last modified 2026-06-17.