WatchGuard Firebox iked Memory Corruption Vulnerability (CVE-2025-11838) | HOL Guard CVE

High · CVSS 7.5CVE-2025-11838

WatchGuard Firebox iked Memory Corruption Vulnerability

Answer in brief

CVE-2025-11838 records a High severity (CVSS 7.5) vulnerability in WatchGuard Firebox iked Memory Corruption Vulnerability. The current sources do not mark it as known exploited. The current feed maps WatchGuard/Fireware OS (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Dec 4, 2025Updated Aug 10, 2026Source checked Sep 24, 2026First seen by HOL Aug 10, 2026Material review Aug 10, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.5
Exploitation: Not marked as known exploited
Affected software: 33 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps WatchGuard/Fireware OS (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:h:watchguard:fireboxcloud:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m270:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m290:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m370:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m390:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m440:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m4600:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m470:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m4800:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m5600:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m570:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m5800:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m590:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m670:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_m690:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_nv5:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t115-w:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t125:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t125-w:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t145:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t145-w:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t185:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t20:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t25:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t40:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t45:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t55:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t70:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t80:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:firebox_t85:-:::::::*	Not reported	Not reported
cpe:2.3:h:watchguard:fireboxv:-:::::::*	Not reported	Not reported
cpe:2.3:o:watchguard:fireware::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
WatchGuard/Fireware OSgeneric	2025.1 \|\| 12.6.1	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for WatchGuard/Fireware OS.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Dec 4, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 10, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.