Description
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.
Published: 2026-09-29
Score: 8.2 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Fireware OS 2026.3.2, Fireware OS 2026.2.3, Fireware OS 12.12.3, Fireware OS 12.5.21

Tracking

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Advisories

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History

Tue, 29 Sep 2026 23:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Fireware OS Pre-Authentication Integer Underflow in iked Allows Remote Denial of Service
First Time appeared Watchguard
Watchguard fireware Os
Weaknesses CWE-1284
CWE-191
CPEs cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
Vendors & Products Watchguard
Watchguard fireware Os
References
Metrics cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Watchguard Fireware Os
cve-icon MITRE

Status: PUBLISHED

Assigner: WatchGuard

Published:

Updated: 2026-09-29T23:05:47.652Z

Reserved: 2026-09-05T03:00:39.457Z

Link: CVE-2026-86133

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-30T00:16:37.087

Modified: 2026-09-30T00:16:37.087

Link: CVE-2026-86133

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses