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Vulnerability Details :

CVE-2026-3342

Summary
Assigner-WatchGuard
Assigner Org ID-5d1c2695-1a31-4499-88ae-e847036fd7e3
Published At-03 Mar, 2026 | 13:17
Updated At-03 Mar, 2026 | 13:52
Rejected At-
Credits

WatchGuard Firebox Out of Bounds Write Vulnerability

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:WatchGuard
Assigner Org ID:5d1c2695-1a31-4499-88ae-e847036fd7e3
Published At:03 Mar, 2026 | 13:17
Updated At:03 Mar, 2026 | 13:52
Rejected At:
▼CVE Numbering Authority (CNA)
WatchGuard Firebox Out of Bounds Write Vulnerability

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.

Affected Products
Vendor
WatchGuard Technologies, Inc.WatchGuard
Product
Fireware OS
Default Status
unaffected
Versions
Affected
  • From 11.9 through 11.12.4+541730 (semver)
  • From 12.0 through 12.11.7 (semver)
  • From 12.5 through 12.5.16 (semver)
  • From 2025.1 through 2026.1.1 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-787CWE-787 Out-of-bounds Write
Type: CWE
CWE ID: CWE-787
Description: CWE-787 Out-of-bounds Write
Metrics
VersionBase scoreBase severityVector
4.08.6HIGH
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
Version: 4.0
Base score: 8.6
Base severity: HIGH
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
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-253CAPEC-253 Remote Code Inclusion
CAPEC ID: CAPEC-253
Description: CAPEC-253 Remote Code Inclusion
Solutions
Configurations
Workarounds
Exploits

WatchGuard is not aware of any exploitation of this issue in the wild.

Credits
finder
btaol
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0003
N/A
Hyperlink: https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0003
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:5d1c2695-1a31-4499-88ae-e847036fd7e3
Published At:03 Mar, 2026 | 14:15
Updated At:03 Mar, 2026 | 14:15

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.08.6HIGH
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/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
Type: Secondary
Version: 4.0
Base score: 8.6
Base severity: HIGH
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/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
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-787Secondary5d1c2695-1a31-4499-88ae-e847036fd7e3
CWE ID: CWE-787
Type: Secondary
Source: 5d1c2695-1a31-4499-88ae-e847036fd7e3
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00035d1c2695-1a31-4499-88ae-e847036fd7e3
N/A
Hyperlink: https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0003
Source: 5d1c2695-1a31-4499-88ae-e847036fd7e3
Resource: N/A

Change History

0
Information is not available yet

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