Description
A heap-based buffer overflow vulnerability in the Fireware OS authentication service allows an attacker who controls or intercepts traffic to the configured Active Directory server to create a denial of service condition and potentially execute arbitrary code by returning a specially crafted response.
Published: 2026-10-27
Score: 9.2 Critical
EPSS: n/a
KEV: No
AI Analysis

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Remediation

Vendor Solution

Fireware OS 2026.4, Fireware OS 12.12.4, Fireware OS 12.5.22

Tracking

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Advisories

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History

Tue, 27 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
Description A heap-based buffer overflow vulnerability in the Fireware OS authentication service allows an attacker who controls or intercepts traffic to the configured Active Directory server to create a denial of service condition and potentially execute arbitrary code by returning a specially crafted response.
Title Fireware OS Heap Buffer Overflow in AD Authentication Service Allows Pre-Authentication Remote Code Execution
First Time appeared Watchguard
Watchguard fireware Os
Weaknesses CWE-122
CWE-131
CWE-787
CPEs cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
Vendors & Products Watchguard
Watchguard fireware Os
References
Metrics cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Watchguard Fireware Os
cve-icon MITRE

Status: PUBLISHED

Assigner: WatchGuard

Published:

Updated: 2026-10-27T15:52:28.465Z

Reserved: 2026-10-19T17:09:38.080Z

Link: CVE-2026-112709

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-27T16:17:29.997

Modified: 2026-10-27T16:17:29.997

Link: CVE-2026-112709

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses