CVE-2026-3344 - Vulnerability Details

- WatchGuard Firebox System Integrity Check Bypass

Description

A vulnerability in WatchGuard Fireware OS may allow an attacker to bypass the Fireware OS filesystem integrity check and maintain limited persistence via a maliciously-crafted firmware update package.This issue affects Fireware OS 12.0 up to and including 12.11.7, 12.5.9 up to and including 12.5.16, and 2025.1 up to and including 2026.1.1.

Published: 2026-03-03

Score: 6.9 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

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
`12.0`	affected	≤ 12.11.7
`12.5.9`	affected	≤ 12.5.16
`2025.1`	affected	≤ 2026.1.1

Configuration 1 [-]

AND

cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*

OR	cpe:2.3:h:watchguard:firebox_m270:-:::::::*
	cpe:2.3:h:watchguard:firebox_m290:-:::::::*
	cpe:2.3:h:watchguard:firebox_m370:-:::::::*
	cpe:2.3:h:watchguard:firebox_m390:-:::::::*
	cpe:2.3:h:watchguard:firebox_m440:-:::::::*
	cpe:2.3:h:watchguard:firebox_m4600:-:::::::*
	cpe:2.3:h:watchguard:firebox_m470:-:::::::*
	cpe:2.3:h:watchguard:firebox_m4800:-:::::::*
	cpe:2.3:h:watchguard:firebox_m5600:-:::::::*
	cpe:2.3:h:watchguard:firebox_m570:-:::::::*
	cpe:2.3:h:watchguard:firebox_m5800:-:::::::*
	cpe:2.3:h:watchguard:firebox_m590:-:::::::*
	cpe:2.3:h:watchguard:firebox_m670:-:::::::*
	cpe:2.3:h:watchguard:firebox_m690:-:::::::*
	cpe:2.3:h:watchguard:firebox_nv5:-:::::::*
	cpe:2.3:h:watchguard:firebox_t20:-:::::::*
	cpe:2.3:h:watchguard:firebox_t25:-:::::::*
	cpe:2.3:h:watchguard:firebox_t40:-:::::::*
	cpe:2.3:h:watchguard:firebox_t45:-:::::::*
	cpe:2.3:h:watchguard:firebox_t55:-:::::::*
	cpe:2.3:h:watchguard:firebox_t70:-:::::::*
	cpe:2.3:h:watchguard:firebox_t80:-:::::::*
	cpe:2.3:h:watchguard:firebox_t85:-:::::::*
	cpe:2.3:h:watchguard:fireboxcloud:-:::::::*
	cpe:2.3:h:watchguard:fireboxv:-:::::::*

Configuration 2 [-]

AND

cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*

OR	cpe:2.3:h:watchguard:firebox_t15:-:::::::*
	cpe:2.3:h:watchguard:firebox_t35:-:::::::*

Configuration 3 [-]

AND

cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*

OR	cpe:2.3:h:watchguard:firebox_m295:-:::::::*
	cpe:2.3:h:watchguard:firebox_m395:-:::::::*
	cpe:2.3:h:watchguard:firebox_m495:-:::::::*
	cpe:2.3:h:watchguard:firebox_m595:-:::::::*
	cpe:2.3:h:watchguard:firebox_m695:-:::::::*
	cpe:2.3:h:watchguard:firebox_t115-w:-:::::::*
	cpe:2.3:h:watchguard:firebox_t125:-:::::::*
	cpe:2.3:h:watchguard:firebox_t125-w:-:::::::*
	cpe:2.3:h:watchguard:firebox_t145:-:::::::*
	cpe:2.3:h:watchguard:firebox_t145-w:-:::::::*
	cpe:2.3:h:watchguard:firebox_t185:-:::::::*

No data.

Vendor Product Confidence Versions

Watchguard

Fireware Os

100%

Version	Status	Scheme	Platform
`[12.0,12.11.7]`	affected	semver	—
`[12.5.9,12.5.16]`	affected	semver	—
`[2025.1,2026.1.1]`	affected	semver	—

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Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00039.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00005

History

Wed, 04 Mar 2026 19:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Watchguard firebox M270 Watchguard firebox M290 Watchguard firebox M295 Watchguard firebox M370 Watchguard firebox M390 Watchguard firebox M395 Watchguard firebox M440 Watchguard firebox M4600 Watchguard firebox M470 Watchguard firebox M4800 Watchguard firebox M495 Watchguard firebox M5600 Watchguard firebox M570 Watchguard firebox M5800 Watchguard firebox M590 Watchguard firebox M595 Watchguard firebox M670 Watchguard firebox M690 Watchguard firebox M695 Watchguard firebox Nv5 Watchguard firebox T115-w Watchguard firebox T125 Watchguard firebox T125-w Watchguard firebox T145 Watchguard firebox T145-w Watchguard firebox T15 Watchguard firebox T185 Watchguard firebox T20 Watchguard firebox T25 Watchguard firebox T35 Watchguard firebox T40 Watchguard firebox T45 Watchguard firebox T55 Watchguard firebox T70 Watchguard firebox T80 Watchguard firebox T85 Watchguard fireboxcloud Watchguard fireboxv Watchguard fireware
CPEs		cpe:2.3:h:watchguard:firebox_m270:-:::::::* cpe:2.3:h:watchguard:firebox_m290:-:::::::* cpe:2.3:h:watchguard:firebox_m295:-:::::::* cpe:2.3:h:watchguard:firebox_m370:-:::::::* cpe:2.3:h:watchguard:firebox_m390:-:::::::* cpe:2.3:h:watchguard:firebox_m395:-:::::::* cpe:2.3:h:watchguard:firebox_m440:-:::::::* cpe:2.3:h:watchguard:firebox_m4600:-:::::::* cpe:2.3:h:watchguard:firebox_m470:-:::::::* cpe:2.3:h:watchguard:firebox_m4800:-:::::::* cpe:2.3:h:watchguard:firebox_m495:-:::::::* cpe:2.3:h:watchguard:firebox_m5600:-:::::::* cpe:2.3:h:watchguard:firebox_m570:-:::::::* cpe:2.3:h:watchguard:firebox_m5800:-:::::::* cpe:2.3:h:watchguard:firebox_m590:-:::::::* cpe:2.3:h:watchguard:firebox_m595:-:::::::* cpe:2.3:h:watchguard:firebox_m670:-:::::::* cpe:2.3:h:watchguard:firebox_m690:-:::::::* cpe:2.3:h:watchguard:firebox_m695:-:::::::* cpe:2.3:h:watchguard:firebox_nv5:-:::::::* cpe:2.3:h:watchguard:firebox_t115-w:-:::::::* cpe:2.3:h:watchguard:firebox_t125-w:-:::::::* cpe:2.3:h:watchguard:firebox_t125:-:::::::* cpe:2.3:h:watchguard:firebox_t145-w:-:::::::* cpe:2.3:h:watchguard:firebox_t145:-:::::::* cpe:2.3:h:watchguard:firebox_t15:-:::::::* cpe:2.3:h:watchguard:firebox_t185:-:::::::* cpe:2.3:h:watchguard:firebox_t20:-:::::::* cpe:2.3:h:watchguard:firebox_t25:-:::::::* cpe:2.3:h:watchguard:firebox_t35:-:::::::* cpe:2.3:h:watchguard:firebox_t40:-:::::::* cpe:2.3:h:watchguard:firebox_t45:-:::::::* cpe:2.3:h:watchguard:firebox_t55:-:::::::* cpe:2.3:h:watchguard:firebox_t70:-:::::::* cpe:2.3:h:watchguard:firebox_t80:-:::::::* cpe:2.3:h:watchguard:firebox_t85:-:::::::* cpe:2.3:h:watchguard:fireboxcloud:-:::::::* cpe:2.3:h:watchguard:fireboxv:-:::::::* cpe:2.3:o:watchguard:fireware::::::::
Vendors & Products		Watchguard firebox M270 Watchguard firebox M290 Watchguard firebox M295 Watchguard firebox M370 Watchguard firebox M390 Watchguard firebox M395 Watchguard firebox M440 Watchguard firebox M4600 Watchguard firebox M470 Watchguard firebox M4800 Watchguard firebox M495 Watchguard firebox M5600 Watchguard firebox M570 Watchguard firebox M5800 Watchguard firebox M590 Watchguard firebox M595 Watchguard firebox M670 Watchguard firebox M690 Watchguard firebox M695 Watchguard firebox Nv5 Watchguard firebox T115-w Watchguard firebox T125 Watchguard firebox T125-w Watchguard firebox T145 Watchguard firebox T145-w Watchguard firebox T15 Watchguard firebox T185 Watchguard firebox T20 Watchguard firebox T25 Watchguard firebox T35 Watchguard firebox T40 Watchguard firebox T45 Watchguard firebox T55 Watchguard firebox T70 Watchguard firebox T80 Watchguard firebox T85 Watchguard fireboxcloud Watchguard fireboxv Watchguard fireware
Metrics		cvssV3_1 `{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N'}`

Wed, 04 Mar 2026 16:30:00 +0000

Type	Values Removed	Values Added
References	https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0005

Wed, 04 Mar 2026 15:45:00 +0000

Type	Values Removed	Values Added
References		https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00005

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

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

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

Type	Values Removed	Values Added
Description		A vulnerability in WatchGuard Fireware OS may allow an attacker to bypass the Fireware OS filesystem integrity check and maintain limited persistence via a maliciously-crafted firmware update package.This issue affects Fireware OS 12.0 up to and including 12.11.7, 12.5.9 up to and including 12.5.16, and 2025.1 up to and including 2026.1.1.
Title		WatchGuard Firebox System Integrity Check Bypass
First Time appeared		Watchguard Watchguard fireware Os
Weaknesses		CWE-440
CPEs		cpe:2.3:a:watchguard:fireware_os::::::::12.0 cpe:2.3:a:watchguard:fireware_os::::::::12.5.9 cpe:2.3:a:watchguard:fireware_os:::::::*:2025.1
Vendors & Products		Watchguard Watchguard fireware Os
References		https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0005
Metrics		cvssV4_0 `{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}`

Subscriptions

Watchguard Firebox M270 Firebox M290 Firebox M295 Firebox M370 Firebox M390 Firebox M395 Firebox M440 Firebox M4600 Firebox M470 Firebox M4800 Firebox M495 Firebox M5600 Firebox M570 Firebox M5800 Firebox M590 Firebox M595 Firebox M670 Firebox M690 Firebox M695 Firebox Nv5 Firebox T115-w Firebox T125 Firebox T125-w Firebox T145 Firebox T145-w Firebox T15 Firebox T185 Firebox T20 Firebox T25 Firebox T35 Firebox T40 Firebox T45 Firebox T55 Firebox T70 Firebox T80 Firebox T85 Fireboxcloud Fireboxv Fireware Fireware Os

MITRE

Status: PUBLISHED

Assigner: WatchGuard

Published: 2026-03-03T13:17:56.622Z

Updated: 2026-03-04T15:22:41.878Z

Reserved: 2026-02-27T15:37:53.452Z

Link: CVE-2026-3344

Vulnrichment

Updated: 2026-03-03T14:32:54.316Z

NVD

Status : Analyzed

Published: 2026-03-03T14:15:57.853

Modified: 2026-03-04T19:19:41.717

Link: CVE-2026-3344

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-03-04T14:54:20Z

Weaknesses

CWE-440

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

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