CVE-2026-13383

High

Description

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.

SeverityHigh

CVSS7.2

Exploit probability—

ProductWatchguard Fireware

PublishedJul 3, 2026

First seenJul 3, 2026

Weakness typeCWE-787Out-of-bounds write

How to fix

Update

watchguard fireware12.12.1, 2026.2.1 or later

Vendor advisories

psirt.watchguard.com/CVE-2026-13383
watchguard.com/wgrd-psirt/advisory/wgsa-2026-00020

Affected products

Product	Affected versions	Fixed in
watchguard fireware	12.1 ≤ v < 12.12.1, 2025.1 ≤ v < 2026.2.1, 12.5 ≤ v ≤ 12.5.18	12.12.1, 2026.2.1

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