8.6High
CVE-2026-13384WatchGuard Firebox wgagent Out of Bounds Write Vulnerability
Description
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS wgagent process could allow an authenticated privileged user to execute arbitrary code via a specially crafted requests to the Management Web UI.
Weakness (CWE):
CWE-787
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| watchguard | fireware | 12.1 – < 12.12.1 | |
| WatchGuard | Fireware OS | 2025.1 – < 2026.2.1, 12.1 – < 12.12.1 |
References and patches
- https://psirt.watchguard.com/CVE-2026-13384 vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00021 vendor-advisoryVendor Advisory
CPE matches (NVD) (3)
cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*≥ 12.1 < 12.12.1cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*≥ 2025.1 < 2026.2.1cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*≥ 12.5 ≤ 12.5.18