Advisoriesby IbisWatchGuard TechnologiesCVE-2026-13084
WatchGuard Technologies Fireware OS: null pointer dereference
Fix: upgrade to 2026.2.1 or later (4 fixed versions below)
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 versions
| Package | Affected | Fixed in |
|---|---|---|
| Fireware OS Product | >= 2025.1, < 2026.2.1 | 2026.2.1 |
| >= 12.0, < 12.12.1 | 12.12.1 | |
| <= 11.10.2 | No fix yet | |
| >= 12.0, < 12.11.9 | 12.11.9 | |
| >= 12.0, < 12.5.19 | 12.5.19 |
Details and references
- CVSS 4.0
- 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
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-476