CVE-2026-13368
Received Received - Intake

Race Condition in WatchGuard Fireware OS Leads to Use-After-Free in LDAP Authentication

Publication date: 2026-07-03

Last updated on: 2026-07-03

Assigner: WatchGuard Technologies, Inc.

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. This vulnerability affects Fireware OS 11.0 up to and including 11.12.4_Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2.

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Meta Information

Published
2026-07-03
Last Modified
2026-07-03
Generated
2026-07-03
AI Q&A
2026-07-03
EPSS Evaluated
N/A
NVD
CVE-2026-13368
EUVD
EUVD-2026-41456

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
watchguard fireware_os From 11.0|end_including=11.12.4_Update1 (inc)
watchguard fireware_os From 12.0|end_including=12.12 (inc)
watchguard fireware_os From 2025.1|end_including=2026.2 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

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Executive Summary

This vulnerability is a race condition in the LDAP authentication process for the Mobile User VPN with IKEv2 in WatchGuard Fireware OS. It leads to a use-after-free condition, which means that the system tries to use memory after it has been freed, causing unexpected behavior.

A remote unauthenticated attacker can exploit this flaw to execute arbitrary code within the iked process on affected Fireboxes that use an external LDAP authentication server for Mobile VPN with IKEv2.

Impact Analysis

Exploitation of this vulnerability allows a remote attacker without authentication to run arbitrary code on the affected device. This can lead to full compromise of the iked process, potentially allowing the attacker to control or disrupt VPN services, access sensitive network resources, or further penetrate the internal network.

Mitigation Strategies

To mitigate this vulnerability, you should upgrade your WatchGuard Fireware OS to a fixed version where the issue is resolved.

  • Upgrade to Fireware OS version 2026.2.1 or later.
  • Upgrade to Fireware OS version 12.12.1 or later.
  • Upgrade to Fireware OS version 12.5.x for T15 and T35 models.

Note that versions 11.x are end-of-life and remain unresolved, so upgrading from these versions is critical.

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