CVE-2025-9242
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.
How to fix
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: Dec 3, 2025- watchguard fireware12.11.4, 12.5.13 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| watchguard fireware | 11.10.2 ≤ v < 12.11.4, 11.10.2 ≤ v < 12.5.13, 2025.1 | 12.11.4, 12.5.13 |
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