CVE-2026-86133 — Fireware OS Pre-Authentication Integer Underflow in iked Allows Remote Denial of Service
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 proce…
Published: 2026-09-29 · CVSS: 8.2 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7