Out-of-bounds Write Vulnerability in WatchGuard Fireware OS
CVE-2026-13050

8.6HIGH

Key Information:

Vendor

Watchguard

Status
Fireware Os
Vendor
CVE Published:
2 July 2026

What is CVE-2026-13050?

An Out-of-bounds Write vulnerability has been identified in the WatchGuard Fireware OS, specifically within the networkd process. This flaw allows authenticated privileged users to execute arbitrary code through specially crafted requests directed at the Management Web UI. The vulnerability impacts multiple versions of Fireware OS, emphasizing the need for immediate attention and remediation to secure network environments. For further details, refer to the vendor advisory.

Affected Version(s)

Fireware OS 11.8 <= 11.12.4+541730

Fireware OS 12.0 <= 12.12

Fireware OS 12.5 <= 12.5.18

References

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-...
vendor-advisory

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

Credit

Nicholas Zubrisky (@NZubrisky) of TrendAI Research
.