Security
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CVE-2026-86132

HIGHCVSS 7.5
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Description

An integer underflow vulnerability in the WatchGuard Fireware OS IKEv2 daemon (iked) allows a remote, unauthenticated attacker to crash the process by sending a specially crafted encrypted IKEv2 message negotiated with an AES-GCM cipher suite.

Timeline
Published:September 30th, 2026 12:16 AM
Last modified:October 6th, 2026 8:36 PM
CVSS Scoring

CVSS v3: 7.5 (HIGH)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Software
From NVD CPE configuration data

Vendors

watchguard

Products

fireware
Weaknesses (CWE)
CWE-191
References & Reports
Advisories, patches, and third-party reports

Source: NIST NVD · Data may lag official sources by up to one minute