A heap-based buffer overflow vulnerability in Fireware OS's iked process allows an authenticated administrator to crash the IKE daemon (iked), resulting in a denial of service, by saving a specially crafted configuration.

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Advisories

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Fixes

Solution

Fireware OS 2026.2.1, Fireware OS 12.12.1, Fireware OS 12.11.9, Fireware OS 12.5.18


Workaround

No workaround given by the vendor.

History

Thu, 27 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Description A heap-based buffer overflow vulnerability in Fireware OS's iked process allows an authenticated administrator to crash the IKE daemon (iked), resulting in a denial of service, by saving a specially crafted configuration.
Title Fireware OS Heap-Based Buffer Overflow in iked Allows Denial of Service
First Time appeared Watchguard
Watchguard fireware Os
Weaknesses CWE-122
CWE-1284
CPEs cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
Vendors & Products Watchguard
Watchguard fireware Os
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WatchGuard

Published:

Updated: 2026-08-27T22:58:26.855Z

Reserved: 2026-08-27T16:29:07.182Z

Link: CVE-2026-81851

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-28T00:18:22.687

Modified: 2026-08-28T00:18:22.687

Link: CVE-2026-81851

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses