October 17, 2025 By Pierluigi Paganini
A critical WatchGuard Fireware vulnerability, tracked as CVE-2025-9242, could allow unauthenticated code execution.
Researchers revealed details of a critical vulnerability, tracked as CVE-2025-9242 (CVSS score of 9.3), in WatchGuard Fireware. An unauthenticated attacker can exploit the flaw to execute arbitrary code. The vulnerability is an out-of-bounds write issue that affects Fireware OS versions 11.10.2–11.12.4_Update1, 12.0–12.11.3, and 2025.1.
“An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow a remote unauthenticated attacker to execute arbitrary code. This vulnerability affects both the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when configured with a dynamic gateway peer.” reads the advisory. “This vulnerability affects Fireware OS 11.10.2 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.3 and 2025.1.”
