CVE-2026-13084
High
Description
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
SeverityHigh
CVSS7.5
Exploit probability—
ProductWatchguard Fireware
PublishedJul 3, 2026
First seenJul 3, 2026
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- watchguard fireware12.5.19, 11.12.4, 12.12.1, 2026.2.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| watchguard fireware | 12.5 ≤ v < 12.5.19, 11.0.0 ≤ v < 11.12.4, 11.12.4, 12.0 ≤ v < 12.12.1, 2025.1 ≤ v < 2026.2.1 | 12.5.19, 11.12.4, 12.12.1, 2026.2.1 |
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