CVE-2026-13084

EUVD-2026-41457

03.07.2026, 00:16

A null pointer dereference vulnerability in WatchGuard Fireware OS may allow a remote unauthenticated attacker to create a denial-of-service (DoS) condition by sending specially crafted IKEv2 messages. This vulnerability affects both the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when configured with a dynamic gateway peer.

This vulnerability affects Fireware OS 11.10.2 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

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 40.48%

Affected Products (NVD)

Vendor	Product	Version
watchguard	fireware	12.5 ≤ 𝑥 < 12.5.19
watchguard	fireware	11.0.0 ≤ 𝑥 < 11.12.4
watchguard	fireware	11.12.4
watchguard	fireware	11.12.4:u1
watchguard	fireware	12.0 ≤ 𝑥 < 12.12.1
watchguard	fireware	2025.1 ≤ 𝑥 < 2026.2.1

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-476 - NULL Pointer Dereference
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

References

https://psirt.watchguard.com/CVE-2026-13084

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00024