CVE-2026-13383: WatchGuard Firebox ikestubd Out of Bounds Write Vulnerability
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Mitigate the WatchGuard Firebox ikestubd Out of Bounds Write vulnerability by restricting access to the Management Web UI to trusted users/administrative sources only (e.g., via network ACLs/WAF/firewall) until the fixed version is applied.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-13383?
The severity of CVE-2026-13383 is rated high with a CVSS score of 8.6.
How do I fix CVE-2026-13383?
To fix CVE-2026-13383, update your WatchGuard Fireware OS to version 12.13 or later.
What type of vulnerability is CVE-2026-13383?
CVE-2026-13383 is an Out-of-Bounds Write vulnerability.
Who is affected by CVE-2026-13383?
CVE-2026-13383 affects authenticated privileged users using WatchGuard Fireware OS versions 12.1 to 12.12 and 2025.1.
What can an attacker do with CVE-2026-13383?
An attacker exploiting CVE-2026-13383 can execute arbitrary code on the affected system via specially crafted requests.