Vulnerability · Published Jul 2, 2026 · Assigned by WatchGuard
CVE-2026-13384WatchGuard Firebox wgagent Out of Bounds Write Vulnerability
High 8.6
In plain English
A high-severity out-of-bounds write in Fireware OS from WatchGuard. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).
Severity (CVSS 4.0)8.6High
Exploit odds (30 days)0.7%top 45.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WatchGuard | Fireware OS | 2025.1 – before 2026.2.112.1 – before 12.12.1 |
| WatchGuard | Fireware OS | 12.1 – before 12.11.9 |
| WatchGuard | Fireware OS | 12.1 – before 12.5.19 |
Weakness: CWE-787 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References
- https://psirt.watchguard.com/CVE-2026-13384 vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00021 vendor-advisory