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Critical · 9.3 Known exploited Public exploit CVE-2025-9242 EUVD-2025-29699GHSA-g6q4-chqv-724q

WatchGuard Firebox iked Out of Bounds Write Vulnerability

Published Sep 17, 2025 · Updated Aug 10, 2026 · Assigned by WatchGuard

Vendor: WatchGuard Product: Fireware OS

Description

An Out-of-bounds Write vulnerability in the WatchGuard Fireware OS iked process 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.
If the Firebox was previously configured with the mobile user VPN with IKEv2 or a branch office VPN using IKEv2 to a dynamic gateway peer, and both of those configurations have since been deleted, that Firebox may still be vulnerable if a branch office VPN to a static gateway peer is still configured.

Affected products

VendorProductAffectedFixed
WatchGuard Fireware OS 11.0 – ≤ 11.12.4+541730, 12.0 – < 12.11.4, 2025.0 – < 2025.1.1, 12.0 – < 12.3.1+722811, 12.0 – < 12.5.13 12.11.4

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References