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CVE-2026-8247

HIGH CVSS: 8.8 Published: 2026-07-03 Modified: 2026-08-14

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.

Affected Platforms

Watchguard Firebox T125Watchguard Firebox M290Watchguard Firebox T20Watchguard Firebox M690Watchguard Firebox T25Watchguard Firebox T80Watchguard FirewareWatchguard Firebox T145-WWatchguard Firebox CloudWatchguard Firebox M295

Weakness Type

CWE-120, CWE-787

References