A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management…

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Mar 3, 2026 · NIST NVD

   Detected

   A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link.

2. Aug 10, 2026 · NIST NVD

   Updated

   A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link.

Affected

• cpe watchguard/firewareversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-3343

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-3343

  A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link.

  nvd.nist.gov

References

• Reference · psirt.watchguard.com
• Vendor Advisory · watchguard.com