CVE-2025-1547: WatchGuard Fireware

High severity, CVSS 7.2. EPSS: 0.4% chance of exploitation in the next 30 days.

A stack-based buffer overflow vulnerability [CWE-121] in WatchGuard Fireware OS's certificate request command could allow an authenticated privileged user to execute arbitrary code via specially crafted CLI commands.

Affected products

• WatchGuard Fireware: from 12.0.0, before 12.11.3 (fixed in 12.11.3); from 12.5, before 12.5.13 (fixed in 12.5.13)

Published 2025-12-04. Last modified 2026-09-25.