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CVE-2026-3342

WatchGuard Firebox Out of Bounds Write Vulnerability

Published: Mar 3, 2026Updated: Mar 4, 2026 Sources: CVE List NVDCWE-787
NVD MITRE
7.2CVSSHIGH
EPSS Score
0.8%
Top 49.4%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

Description

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an authenticated privileged administrator to execute arbitrary code with root permissions via an exposed management interface. This vulnerability affects Fireware OS 11.9 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-787

Affected Products

Fireware OSWatchGuardNetworking Infrastructure
firewarewatchguardNetworking Infrastructure
watchguardcommercialUSNetworking Infrastructure

Attack Graph

Products CVE Techniques Tactics

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Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00003
watchguard.com

Timeline

Published
Mar 3, 2026
Last Updated
Mar 4, 2026

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