Out-of-bounds Write Vulnerability in WatchGuard Fireware OS
CVE-2025-12026

8.6HIGH

Key Information:

Vendor

Watchguard

Status
Fireware Os
Vendor
CVE Published:
4 December 2025

What is CVE-2025-12026?

An Out-of-bounds Write vulnerability exists in WatchGuard Fireware OS's certificate request command, enabling an authenticated privileged user to potentially execute arbitrary code through specially crafted CLI commands. This vulnerability may compromise system integrity and allows attackers to leverage the command line interface for unauthorized actions. It affects multiple versions of Fireware OS, making it essential for users to review their current installations and apply necessary updates.

Affected Version(s)

Fireware OS 12.0 <= 12.11.4

Fireware OS 12.5 <= 12.5.13

Fireware OS 2025.1 <= 2025.1.2

References

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-...

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-12026 : Out-of-bounds Write Vulnerability in WatchGuard Fireware OS