VulnerabilityAnalyzed

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.

CRITICAL 9.2EPSS 1.01%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.01%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 4.0: 9.2 CRITICALCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 1.01% probability · 61th percentile
CISA KEV: Not listed
Weakness: CWE-416
Affected: watchguard/fireware
Source: 5d1c2695-1a31-4499-88ae-e847036fd7e3

References

https://psirt.watchguard.com/CVE-2026-13368Broken Link
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00023Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.