NULL pointer dereference in Freebsd
CVE-2025-14769
In some cases, the `tcp-setmss` handler may free the packet data and throw an error without halting the rule processing engine. A subsequent rule can then allow the traffic after the packet data is gone, resulting in a NULL pointer dereference. Maliciously crafted packets sent from a remote host may result in a Denial of Service (DoS) if the `tcp-setmss` directive is used and a subsequent rule would allow the traffic to pass.
EPSS: 0.011 (62.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Freebsd — versions 14.3, 13.5, 14.3-RELEASE
Weakness classification (CWE)
References
- secteam@freebsd.org (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-14769?
- CVE-2025-14769 is a high-severity vulnerability in Freebsd, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-03-09.
- How severe is CVE-2025-14769?
- High severity. CVSS v3 base score is 7.5 out of 10.