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.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
WatchGuard Fireware OS unaffected
Version Status Constraints
11.9 affected ≤ 11.12.4+541730
12.0 affected ≤ 12.11.7
12.5 affected ≤ 12.5.16
2025.1 affected ≤ 2026.1.1

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Watchguard Subscribe
Fireware Os Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0003 cve-icon cve-icon
History

Tue, 03 Mar 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 03 Mar 2026 13:45:00 +0000

Type Values Removed Values Added
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.
Title WatchGuard Firebox Out of Bounds Write Vulnerability
First Time appeared Watchguard
Watchguard fireware Os
Weaknesses CWE-787
CPEs cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:11.9
cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:12.0
cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:12.5
cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:2025.1
Vendors & Products Watchguard
Watchguard fireware Os
References
Metrics cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: WatchGuard

Published:

Updated: 2026-03-03T13:52:15.747Z

Reserved: 2026-02-27T15:34:47.745Z

Link: CVE-2026-3342

cve-icon Vulnrichment

Updated: 2026-03-03T13:52:12.128Z

cve-icon NVD

Status : Received

Published: 2026-03-03T14:15:56.643

Modified: 2026-03-03T14:15:56.643

Link: CVE-2026-3342

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses