PT-2026-55334 · Watchguard · Fireware Os

Cody Sixteen · Published 2026-07-02 · Updated 2026-07-03 · CVE-2026-13383

Mitre

CVSS v4.0

8.6

High

Base vector

AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-13383

Affected Products

Fireware Os

References · 2

• https://watchguard.com/wgrd-psirt/advisory/wgsa-2026-00020 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-13383 · Security Note