CVE-2025-14769

HIGH

FreeBSD - Denial of Service via tcp-setmss Rule Processing

Title source: llm
STIX 2.1

Description

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.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0110
EPSS Percentile 61.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-476
Status published
Products (2)
freebsd/freebsd 13.5 (8 CPE variants)
freebsd/freebsd 14.3 (7 CPE variants)
Published Mar 09, 2026
Tracked Since Mar 09, 2026