Out-of-bounds write in Fireware OS - CVE-2025-9242
Published: September 19, 2025 / Updated: November 12, 2025
Vulnerability identifier: #VU115852
CSH Severity: Critical
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-9242
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error within the iked process process. A remote non-authenticated attacker can send specially crafted packets to the affected device, trigger an out-of-bounds write and execute arbitrary code on the system.
Note, the vulnerability affects both the mobile user VPN with IKEv2 and the branch office VPN using IKEv2 when configured with a dynamic gateway peer.
Affected software
Fireware OS
How to mitigate CVE-2025-9242
Install updates from vendor's website.
Fireware OS - addressed in versions 12.3.1 Update 3, 12.5.13, 12.11.4, 2025.1.1