CVE-2025-14733 WatchGuard Firebox Out of Bounds Write
Remote unauthenticated attackers can execute arbitrary code on WatchGuard Firebox devices via an out-of-bounds write in the iked process.
- Exploited in the wild
- Since 19 Dec 2025
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-14733?
CVE-2025-14733 is a critical memory corruption vulnerability in Watchguard Fireware, published on 19 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-787
Which versions are affected by CVE-2025-14733?
It affects 1 product.
Products include Watchguard Fireware.
How do I fix CVE-2025-14733?
No fix has been published for CVE-2025-14733 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 26 Dec 2025.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-14733 being exploited?
Yes. Attackers have exploited CVE-2025-14733 in the wild since at least 19 Dec 2025, including in ransomware campaigns.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Watchguard Fireware
Sources
Also known as GHSA-hv82-jj64-jf47.