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Cyber Security Agency of Singapore
Alerts

Critical Vulnerability in WatchGuard Fireware Operating System

22 December 2025

WatchGuard has released security updates addressing a critical vulnerability in their Fireware operating system. Users and administrators of affected product versions are advised to update to the latest versions immediately.

Background

WatchGuard has released security updates addressing a critical vulnerability (CVE-2025-14733) in their Fireware operating system (OS). The vulnerability has a Common Vulnerability Scoring System (CVSS v3.1) score of 9.8 out of 10. 

Impact

Successful exploitation of the vulnerability could allow an unauthenticated attacker to conduct remote code execution.

Known Exploitation

This vulnerability is reportedly being exploited.

Affected Products

The vulnerability affects the following:

  • Fireware OS versions from 11.10.2 to 11.12.4_Update1

  • Fireware OS versions from 12.0 to 12.11.5 

  • Fireware OS versions from 2025.1 to 2025.1.3

Recommendations 

Users and administrators of affected product versions are advised to update to the latest versions immediately.

References

https://nvd.nist.gov/vuln/detail/CVE-2025-14733 (opens in new tab)

https://www.watchguard.com/wgrd-blog/watchguard-fireware-versions-202514-12116-and-12515-available-now (opens in new tab)

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00027 (opens in new tab)