Out-of-bounds write in Fireware OS - CVE-2025-14733
Published: December 19, 2025
Vulnerability identifier: #VU120206
CSH Severity: Critical
CVSS v4.0: 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-2025-14733
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: WatchGuard
Affected software:
Fireware OS
Fireware OS
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error within the iked process. A remote attacker can send specially crafted IKEv2 packets to the system, trigger an out-of-bounds write and execute arbitrary code.
Note, the vulnerability is being actively exploited in the wild.
How to mitigate CVE-2025-14733
Install updates from vendor's website.