CVE-2025-14769

ipfw denial of service

Published Mar 9, 2026 CVSS 3.1 · 7.5 High EPSS 1.2% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History
Type Values Removed Values Added
CPEs cpe:2.3:o:freebsd:freebsd:13.5:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.5:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.5:p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.5:p3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.5:p4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.5:p5:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.5:p6:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.5:p7:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.3:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.3:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.3:p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.3:p3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.3:p4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.3:p5:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.3:p6:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Freebsd
Freebsd freebsd
Vendors & Products Freebsd
Freebsd freebsd
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title ipfw denial of service
Weaknesses CWE-476
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
freebsd
Published
Updated
Mar 9, 2026, 1:30 PM
Reserved
Dec 16, 2025, 2:00 AM
Status
Analyzed
Published
Mar 9, 2026, 12:16 PM
Modified
Jun 17, 2026, 8:36 AM