CVE-2025-11838

UNKNOWN 0.0

WatchGuard Firebox iked Memory Corruption Vulnerability

CVSS Score

0.0

EPSS Score

0.5%

EPSS Percentile

37th

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.

CWE	CWE-763
Vendor	watchguard
Product	fireware os
Published	Dec 4, 2025
Last Updated	Aug 10, 2026

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Affected Versions

WatchGuard / Fireware OS

2025.1 ≤ 2025.1.3 12.6.1 ≤ 12.11.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

psirt.watchguard.com: https://psirt.watchguard.com/CVE-2025-11838 watchguard.com: https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00018

Credits

McCaulay Hudson (@_McCaulay) of watchTowr