CVE-2026-13084

Null Pointer Dereference in WatchGuard Fireware OS iked Process

Assigner: WatchGuard
Reserved: 23.06.2026 Published: 02.07.2026 Updated: 02.07.2026

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

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	WatchGuard
Product	Fireware OS
Versions	Default: unaffected affected from 11.10.2 to 11.12.4+541730 (incl.) affected from 12.0 to 12.12 (incl.) affected from 12.5 to 12.5.18 (incl.) affected from 2025.1 to 2026.2 (incl.)

Vendor

WatchGuard

Product

Fireware OS

Versions

Default: unaffected

affected from 11.10.2 to 11.12.4+541730 (incl.)
affected from 12.0 to 12.12 (incl.)
affected from 12.5 to 12.5.18 (incl.)
affected from 2025.1 to 2026.2 (incl.)

References

Problem Types

CWE-476 NULL Pointer Dereference CWE

Impacts