WatchGuard Fireware OS up to 11.12.4+541730/12.5.18/12.12/2026.2 path traversal

Summaryinfo

A vulnerability described as critical has been identified in WatchGuard Fireware OS up to 11.12.4+541730/12.5.18/12.12/2026.2. Affected by this vulnerability is an unknown functionality. Executing a manipulation can lead to path traversal. The identification of this vulnerability is CVE-2026-13054. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in WatchGuard Fireware OS up to 11.12.4+541730/12.5.18/12.12/2026.2 and classified as critical. This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A path traversal vulnerability in the WatchGuard Fireware OS Management Web UI allows a privileged authenticated attacker to write arbitrary files on the Firebox's filesystem. This vulnerability affects Fireware OS 11.0 up to and including 11.12.4_Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2.

The weakness was shared by Nicholas Zubrisky as wgsa-2026-00028. The advisory is shared for download at watchguard.com. This vulnerability was named CVE-2026-13054 since 06/23/2026. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are needed for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/03/2026). The MITRE ATT&CK project declares the attack technique as T1006.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• WatchGuard

Name

• Fireware OS

Version

• 11.12.4+541730
• 12.0
• 12.1
• 12.2
• 12.3
• 12.4
• 12.5
• 12.5.0
• 12.5.1
• 12.5.2
• 12.5.3
• 12.5.4
• 12.5.5
• 12.5.6
• 12.5.7
• 12.5.8
• 12.5.9
• 12.5.10
• 12.5.11
• 12.5.12
• 12.5.13
• 12.5.14
• 12.5.15
• 12.5.16
• 12.5.17
• 12.5.18
• 12.6
• 12.7
• 12.8
• 12.9
• 12.10
• 12.11
• 12.12
• 2026.0
• 2026.1
• 2026.2

License

• commercial

CPE 2.3info

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CPE 2.2info

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