#VU115852 Out-of-bounds write in Fireware OS - CVE-2025-9242

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Main Vulnerability Database Vulnerabilities #VU115852

#VU115852 Out-of-bounds write in Fireware OS - CVE-2025-9242

Published: September 19, 2025 / Updated: November 12, 2025


Vulnerability identifier: #VU115852
Vulnerability risk: Critical
CVSSv4.0: 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/E:A/U:Red
CVE-ID: CVE-2025-9242
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability: The vulnerability is being exploited in the wild
Vulnerable software:
Fireware OS
Software vendor:
WatchGuard

Description

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.


Remediation

Install updates from vendor's website.

External links