Vulnerabilities CVE-2026-8247

CVE-2026-8247

High

Open

TLP:CLEAR

WatchGuard Firebox admd Out of Bounds Write Vulnerability

NVD CVE.org

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Description

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an unauthenticated attacker on the same local network segment to execute arbitrary code. This vulnerability affects Fireware OS 11.0 up to and including 11.12.4_Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2.

Details

CVSS Score: 7.7
EPSS Score ⓘ: 0.21%

10.8th percentile
CVSS Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Confidence: 90%
Published: Jul 2, 2026
Last Modified: Aug 10, 2026

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