What is CVE-2026-13368?

CVE-2026-13368 is a high-severity vulnerability in Watchguard Firebox Cloud, classified under Use After Free. CVSS score: 8.1/10. Published 2026-07-03.

How severe is CVE-2026-13368?

High severity. CVSS v3 base score is 8.1 out of 10.

Use After Free in Watchguard Firebox Cloud

CVE-2026-13368

WatchGuard Fireware OS contains a race condition leading to a use-after-free vulnerability in LDAP authentication for the Mobile User VPN with IKEv2. A remote unauthenticated attacker could exploit this vulnerability to execute arbitrary code in the context of the iked process on Fireboxes that have a Mobile VPN with IKEv2 configured to use an external LDAP authentication server.

Vulnerability class: Use-After-Free

EPSS: 0.008 (52.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-416 — Use After Free

References

5d1c2695-1a31-4499-88ae-e847036fd7e3 (vendor-advisory, Vendor Advisory)
5d1c2695-1a31-4499-88ae-e847036fd7e3 (vendor-advisory, Broken Link)

Frequently asked questions

What is CVE-2026-13368?: CVE-2026-13368 is a high-severity vulnerability in Watchguard Firebox Cloud, classified under Use After Free. CVSS score: 8.1/10. Published 2026-07-03.
How severe is CVE-2026-13368?: High severity. CVSS v3 base score is 8.1 out of 10.