Cyber Resilience

CVE-2025-11838

High

Published: 04 December 2025

Published
04 December 2025
Modified
16 December 2025
KEV Added
—
Patch
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CVSS Score v4 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0011 28.7th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-11838 is a high-severity Release of Invalid Pointer or Reference (CWE-763) vulnerability in Watchguard Fireware. Its CVSS base score is 8.7 (High).

Operationally, ranked at the 28.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

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.

CWE(s)
CWE-763

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

watchguard
fireware
2025.1 — 2025.1.3 · 12.0.0 — 12.11.5

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References