CVE-2025-14769 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00011.

Exploitation none

Automatable yes

Technical Impact partial

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://security.freebsd.org/advisories/FreeBSD-SA-25:11.ipfw.asc

History

Mon, 09 Mar 2026 14:15:00 +0000

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'}`

Mon, 09 Mar 2026 11:45:00 +0000

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		https://security.freebsd.org/advisories/FreeBSD-SA-25:11.ipfw.asc

Projects

Sign in to view the affected projects.

MITRE

Status: PUBLISHED

Assigner: freebsd

Published: 2026-03-09T11:34:52.386Z

Updated: 2026-03-09T13:30:18.204Z

Reserved: 2025-12-16T02:00:18.446Z

Link: CVE-2025-14769

Vulnrichment

Updated: 2026-03-09T13:29:47.428Z

NVD

Status : Awaiting Analysis

Published: 2026-03-09T12:16:11.280

Modified: 2026-03-09T14:16:05.250

Link: CVE-2025-14769

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-476

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-14769", "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "state": "PUBLISHED", "assignerShortName": "freebsd", "dateReserved": "2025-12-16T02:00:18.446Z", "datePublished": "2026-03-09T11:34:52.386Z", "dateUpdated": "2026-03-09T13:30:18.204Z"}, "containers": {"cna": {"datePublic": "2025-12-17T02:00:00.000Z", "title": "ipfw denial of service", "references": [{"tags": ["vendor-advisory"], "url": "https://security.freebsd.org/advisories/FreeBSD-SA-25:11.ipfw.asc"}], "affected": [{"defaultStatus": "unknown", "modules": ["ipfw"], "product": "FreeBSD", "vendor": "FreeBSD", "versions": [{"lessThan": "p7", "status": "affected", "version": "14.3-RELEASE", "versionType": "release"}, {"lessThan": "p8", "status": "affected", "version": "13.5-RELEASE", "versionType": "release"}]}], "descriptions": [{"lang": "en", "value": "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.\n\nMaliciously 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."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-476", "description": "CWE-476: NULL Pointer Dereference", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "shortName": "freebsd", "dateUpdated": "2026-03-09T11:34:52.386Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-03-09T13:29:55.593430Z", "id": "CVE-2025-14769", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-09T13:30:18.204Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2025-14769", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-09T13:29:55.593430Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-09T13:29:47.428Z"}}], "cna": {"title": "ipfw denial of service", "affected": [{"vendor": "FreeBSD", "modules": ["ipfw"], "product": "FreeBSD", "versions": [{"status": "affected", "version": "14.3-RELEASE", "lessThan": "p7", "versionType": "release"}, {"status": "affected", "version": "13.5-RELEASE", "lessThan": "p8", "versionType": "release"}], "defaultStatus": "unknown"}], "datePublic": "2025-12-17T02:00:00.000Z", "references": [{"url": "https://security.freebsd.org/advisories/FreeBSD-SA-25:11.ipfw.asc", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "value": "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.\n\nMaliciously 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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476: NULL Pointer Dereference"}]}], "providerMetadata": {"orgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "shortName": "freebsd", "dateUpdated": "2026-03-09T11:34:52.386Z"}}}, "cveMetadata": {"cveId": "CVE-2025-14769", "state": "PUBLISHED", "dateUpdated": "2026-03-09T13:30:18.204Z", "dateReserved": "2025-12-16T02:00:18.446Z", "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "datePublished": "2026-03-09T11:34:52.386Z", "assignerShortName": "freebsd"}, "dataVersion": "5.2"}