Freebsd CVE-2025-14769
HIGHCVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
2DescriptionNVD
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.
AnalysisAI
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. [CVSS 7.5 HIGH]
Technical ContextAI
Classified as CWE-476 (NULL Pointer Dereference). 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.
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
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External POC / Exploit Code
Leaving vuln.today