WatchGuard Fireware OS OOB Write CVE-2025-14733 (2025.1.3)
CVE-2025-14733 Published on December 19, 2025
WatchGuard Firebox iked Out of Bounds Write Vulnerability
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.
Known Exploited Vulnerability
This WatchGuard Firebox Out of Bounds Write Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. WatchGuard Fireware OS iked process contains an out of bounds write vulnerability in the OS iked process. This vulnerability may allow a remote unauthenticated attacker to execute arbitrary code and affects both the mobile user VPN with IKEv2 and the branch office VPN using IKEv2 when configured with a dynamic gateway peer.
The following remediation steps are recommended / required by December 26, 2025: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2025-14733 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2025-14733
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Affected Versions
WatchGuard Fireware OS:- Version 2025.1 and below 2025.1.4 is affected.
- Version 12.0 and below 12.11.6 is affected.
- Version 11.10.2, <= 11.12.4+541730 is affected.
- Version 12.0 and below 12.3.1+728352 is affected.
- Version 12.0 and below 12.5.15 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.