MSRXCVE-2025-9242
CVE-2025-9242
WatchGuard Firebox iked Out of Bounds Write Vulnerability
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CVSS 4.0 · CNA
chance of exploitation in the next 30 days (EPSS; in the top 1% of all CVEs)
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
- WatchGuard Fireware OS: 11.0 to ≤ 11.12.4+541730; 12.0 to < 12.11.4; 2025.0 to < 2025.1.1
- WatchGuard Fireware OS: 12.0 to < 12.3.1+722811
- WatchGuard Fireware OS: 12.0 to < 12.5.13
Weakness: CWE-787
2 references (advisories, patches, write-ups)
- https://psirt.watchguard.com/CVE-2025-9242 · vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00015 · vendor-advisory
Sources: CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.