Vulnerability · Published Jul 2, 2026 · Assigned by WatchGuard

CVE-2026-13368WatchGuard Firebox Race Condition and Use-After-Free in Mobile VPN with IKEv2 LDAP Authentication

Critical 9.2

In plain English

A critical-severity use-after-free in Fireware OS from WatchGuard. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities).

Severity (CVSS 4.0)9.2Critical

Exploit odds (30 days)0.9%top 39.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
WatchGuard	Fireware OS	2025.1 – before 2026.2.1
WatchGuard	Fireware OS	12.0 – before 12.11.9
WatchGuard	Fireware OS	12.0 – before 12.5.19

Weakness: CWE-416 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://psirt.watchguard.com/CVE-2026-13368 vendor-advisory
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00023 vendor-advisory