An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.

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Advisories

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Fixes

Solution

Fireware OS 2026.2.2, Fireware OS 12.12.2, Fireware OS 12.5.20


Workaround

No workaround given by the vendor.

History

Fri, 28 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


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

Type Values Removed Values Added
Description An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
Title Fireware OS Integer Underflow in iked Allows Unauthenticated Denial of Service (DoS)
First Time appeared Watchguard
Watchguard fireware Os
Weaknesses CWE-191
CWE-787
CPEs cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
Vendors & Products Watchguard
Watchguard fireware Os
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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: 2026-08-28T16:47:36.682Z

Reserved: 2026-08-07T20:05:53.603Z

Link: CVE-2026-19314

cve-icon Vulnrichment

Updated: 2026-08-28T16:47:31.743Z

cve-icon NVD

Status : Deferred

Published: 2026-08-28T02:16:20.580

Modified: 2026-08-28T20:17:24.063

Link: CVE-2026-19314

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T06:15:03Z

Weaknesses