Vulnerability Details CVE-2026-86133
An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked) allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 25.3%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2026-86133
-
cpe:2.3:o:watchguard:fireware:12.0.0
-
cpe:2.3:o:watchguard:fireware:12.0.1
-
cpe:2.3:o:watchguard:fireware:12.0.2
-
cpe:2.3:o:watchguard:fireware:12.1
-
cpe:2.3:o:watchguard:fireware:12.1.1
-
cpe:2.3:o:watchguard:fireware:12.1.3
-
cpe:2.3:o:watchguard:fireware:12.1.4
-
cpe:2.3:o:watchguard:fireware:12.12
-
cpe:2.3:o:watchguard:fireware:12.12.1
-
cpe:2.3:o:watchguard:fireware:12.2.0
-
cpe:2.3:o:watchguard:fireware:12.2.1
-
cpe:2.3:o:watchguard:fireware:12.3
-
cpe:2.3:o:watchguard:fireware:12.3.1
-
cpe:2.3:o:watchguard:fireware:12.4
-
cpe:2.3:o:watchguard:fireware:12.4.1
-
cpe:2.3:o:watchguard:fireware:12.5
-
cpe:2.3:o:watchguard:fireware:12.5.1
-
cpe:2.3:o:watchguard:fireware:12.5.10
-
cpe:2.3:o:watchguard:fireware:12.5.11
-
cpe:2.3:o:watchguard:fireware:12.5.12
-
cpe:2.3:o:watchguard:fireware:12.5.13
-
cpe:2.3:o:watchguard:fireware:12.5.14
-
cpe:2.3:o:watchguard:fireware:12.5.15
-
cpe:2.3:o:watchguard:fireware:12.5.17
-
cpe:2.3:o:watchguard:fireware:12.5.18
-
cpe:2.3:o:watchguard:fireware:12.5.19
-
cpe:2.3:o:watchguard:fireware:12.5.2
-
cpe:2.3:o:watchguard:fireware:12.5.3
-
cpe:2.3:o:watchguard:fireware:12.5.4
-
cpe:2.3:o:watchguard:fireware:12.5.5
-
cpe:2.3:o:watchguard:fireware:12.5.6
-
cpe:2.3:o:watchguard:fireware:12.5.7
-
cpe:2.3:o:watchguard:fireware:12.5.8
-
cpe:2.3:o:watchguard:fireware:12.5.9
-
cpe:2.3:o:watchguard:fireware:2026.3