CVE-2026-18105 - Vulnerability Details - OpenCVE

An uncontrolled resource consumption vulnerability in Fireware OS's diagnostic tasks feature allows a low-privileged, authenticated user to cause a denial of service of the system's diagnostic tools by repeatedly starting and aborting a specially crafted diagnostic task through the web UI.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Vendors	Products
Watchguard Subscribe	Fireware Os Subscribe

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

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

Workaround

No workaround given by the vendor.

References

Link	Providers
https://psirt.watchguard.com/CVE-2026-18105

History

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

Type	Values Removed	Values Added
Description		An uncontrolled resource consumption vulnerability in Fireware OS's diagnostic tasks feature allows a low-privileged, authenticated user to cause a denial of service of the system's diagnostic tools by repeatedly starting and aborting a specially crafted diagnostic task through the web UI.
Title		Fireware OS Uncontrolled Resource Consumption in Diagnostic Tasks Allows Denial of Service
First Time appeared		Watchguard Watchguard fireware Os
Weaknesses		CWE-400 CWE-770
CPEs		cpe:2.3:a:watchguard:fireware_os::::::::
Vendors & Products		Watchguard Watchguard fireware Os
References		https://psirt.watchguard.com/CVE-2026-18105
Metrics		cvssV4_0 `{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: WatchGuard

Published: 2026-09-29T23:05:47.591Z

Updated: 2026-09-29T23:05:47.591Z

Reserved: 2026-07-28T17:46:55.307Z

Link: CVE-2026-18105

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-09-30T00:16:35.877

Modified: 2026-09-30T00:16:35.877

Link: CVE-2026-18105

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

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