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High severity7.5NVD Advisory· Published Jul 3, 2026· Updated Aug 28, 2026

CVE-2026-13084

CVE-2026-13084

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

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Affected products

4
  • WatchGuard/Fireware4 versions
    cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*+ 3 more
    • cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*range: >=12.5,<12.5.19
    • cpe:2.3:o:watchguard:fireware:11.12.4:-:*:*:*:*:*:*
    • cpe:2.3:o:watchguard:fireware:11.12.4:u1:*:*:*:*:*:*
    • (no CPE)range: 11.10.2 - 11.12.4_Update1, 12.0 - 12.12, 2025.1 - 2026.2

Patches

Vulnerability mechanics

References

2

News mentions

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