What is GHSA-h2w9-p676-66ch?

GHSA-h2w9-p676-66ch is a security advisory published by GitHub Security Advisories with High severity. An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an unauthenticated...

Which CVE IDs does GHSA-h2w9-p676-66ch cover?

GHSA-h2w9-p676-66ch covers the following CVE IDs: CVE-2026-8247. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-h2w9-p676-66chHigh

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an unauthenticated...

Vendor

GitHub Security Advisories

Published

July 3, 2026

Last Modified

July 3, 2026

🔗 CVE IDs covered (1)

CVE-2026-8247 →

📋 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.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-8247
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00026
https://github.com/advisories/GHSA-h2w9-p676-66ch