NULL pointer dereference in FreeBSD - CVE-2025-14769
Published: December 17, 2025
Vulnerability identifier: #VU120164
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-14769
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in ipfw when processing incoming packets under certain configurations involving tcp-setmss. A remote attacker can send specially crafted packets to the system and perform a denial of service attack.
Affected software
FreeBSD
How to mitigate CVE-2025-14769
Install updates from vendor's website.