CVE-2026-13383

WatchGuard Firebox ikestubd Out of Bounds Write Vulnerability

CVSS 8.6 HIGHCWE-787

Vexday Risk Score

18Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.6EPSS —KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

02 Jul 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS ikestubd process could allow an authenticated privileged user to execute arbitrary code via a specially crafted requests to the Management Web UI.This vulnerability affects Fireware OS 12.1 up to and including 12.12 and 2025.1 up to and including 2026.2.

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

Affected products

WatchGuard · Fireware OS

References

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00020