CVE-2026-86133
Fireware OS Pre-Authentication Integer Underflow in iked Allows Remote Denial of Service
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-1284 CWE-191 |
| Vendor | watchguard |
| Product | fireware os |
| Published | Sep 29, 2026 |
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Affected Versions
WatchGuard / Fireware OS
2026.3 < 2026.3.2 2025.0 < 2026.2.3 12.0 < 12.12.3
WatchGuard / Fireware OS
12.0 < 12.5.21
References
Credits
WatchGuard AI Security Research