CVE-2026-13053
WatchGuard Firebox Authenticated Out of Bounds Write in Management CLI Command Handler
Description
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS's CLI could allow an authenticated privileged user to execute arbitrary code via a specially crafted CLI command. This vulnerability affects Fireware OS 11.0 up to and including 11.12.4_Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2.
INFO
Published Date :
July 2, 2026, 11:08 p.m.
Last Modified :
July 2, 2026, 11:08 p.m.
Remotely Exploit :
Yes !
Source :
WatchGuard
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | 5d1c2695-1a31-4499-88ae-e847036fd7e3 |
Solution
- Apply updates for Fireware OS versions 11.12.4_Update1, 12.12, and 2026.2.
- Update to a non-affected Fireware OS version.
- Validate the system has been updated correctly.
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CVE-2026-13053 vulnerability anywhere in the article.