Summaryinfo

A vulnerability was found in WatchGuard Fireware OS up to 11.12.4+541730/12.5.17/12.11.8/2026.1.2. It has been rated as problematic. Affected by this issue is some unknown functionality of the component WebUI. The manipulation leads to cross-site request forgery. This vulnerability is traded as CVE-2026-4315. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in WatchGuard Fireware OS up to 11.12.4+541730/12.5.17/12.11.8/2026.1.2. This issue affects an unknown function of the component WebUI. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. Using CWE to declare the problem leads to CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. Impacted is integrity. The summary by CVE is:

A Cross-Site Request Forgery (CSRF) vulnerability in the WatchGuard Fireware OS WebUI could allow a remote attacker to trigger a denial-of-service (DoS) condition in the Fireware Web UI by convincing an authenticated administrator into visiting a malicious web page.This issue affects Fireware OS: 11.8 through 11.12.4+541730, 12.0 through 12.11.8, and 2025.1 through 2026.1.2.

It is possible to read the advisory at watchguard.com. The identification of this vulnerability is CVE-2026-4315 since 03/17/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-17081). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• WatchGuard

Name

• Fireware OS

Version

• 11.12.4+541730
• 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
• 12.11.0
• 12.11.1
• 12.11.2
• 12.11.3
• 12.11.4
• 12.11.5
• 12.11.6
• 12.11.7
• 12.11.8
• 2026.1.0
• 2026.1.1
• 2026.1.2

License

• commercial

CPE 2.3info

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CPE 2.2info

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