CVE-2025-9242
WatchGuard Firebox iked Out of Bounds Write Vulnerability
WatchGuard Firebox Out-of-Bounds Write Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
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 notes
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00015 ; https://nvd.nist.gov/vuln/detail/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.
Severity
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NAffected Products
| Vendor | Product | Affected versions |
|---|---|---|
| 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 |
References
2 LinksRecord Details
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Tool categories that test for or protect against this vulnerability class.
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