CVE-2026-13084

published 2026-07-03

CVE-2026-13084: A null pointer dereference vulnerability in WatchGuard Fireware OS may allow a remote unauthenticated attacker to create a denial-of-service (DoS) condition by…

Priority P3 49 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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

Affected

11 ranges

Vendor	Product	Version range	Fixed in
watchguard	fireware	—	—
watchguard	fireware	—	—
watchguard	fireware	>= 11.0.0 < 11.12.4	11.12.4
watchguard	fireware	>= 12.0 < 12.12.1	12.12.1
watchguard	fireware	>= 12.5 < 12.5.19	12.5.19
watchguard	fireware	>= 2025.1 < 2026.2.1	2026.2.1
watchguard	fireware_os	>= 11.10.2 < *	*
watchguard	fireware_os	>= 12.0 < 12.12.1	12.12.1
watchguard	fireware_os	>= 12.0 < 12.11.9	12.11.9
watchguard	fireware_os	>= 12.0 < 12.5.19	12.5.19
watchguard	fireware_os	>= 2025.1 < 2026.2.1	2026.2.1

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v4.0 8.7 HIGH 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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