CVE-2025-11838 - CVE House
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Status published High CVE-2025-11838

WatchGuard Firebox iked Memory Corruption Vulnerability

Vulnerability Description

A memory corruption vulnerability in WatchGuard Fireware OS may allow an unauthenticated attacker to trigger a Denial of Service (DoS) condition in the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when configured with a dynamic gateway peer. This vulnerability affects Fireware OS 12.6.1 up to and including 12.11.4 and 2025.1 up to and including 2025.1.2.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • McCaulay Hudson (@_McCaulay) of watchTowr

References

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Affected Vendor

Affected Software

Fireware OS
Vulnerable Versions:
12.6.1, 2025.1

Timeline

Official Publish: December 4th, 2025
Last Modified: December 15th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-763

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.