Out-of-bounds write in Fireware OS - CVE-2026-8247
Published: July 3, 2026
Vulnerability identifier: #VU136878
CSH Severity: High
CVSS v4: 8.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-8247
CWE-ID: CWE-787
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to out-of-bounds write in the admd component when handling adjacent network requests. A remote attacker can send a specially crafted request to execute arbitrary code.
Affected software
Fireware OS
How to mitigate CVE-2026-8247
Install security update from vendor's website.
Fireware OS - addressed in versions 12.12.1, 2026.2.1