An improper input validation and protocol compliance vulnerability in free5GC v4.0.1 allows remote attackers to cause a denial of service. The UPF incorrectly accepts a malformed PFCP Association Setup Request, violating 3GPP TS 29.244. This places the UPF in an inconsistent state where a subsequent valid PFCP Session Establishment Request triggers a cascading failure, disrupting the SMF connection and causing service degradation.
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Fixes

Solution

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Workaround

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History

Fri, 13 Feb 2026 21:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
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': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 13 Feb 2026 16:30:00 +0000

Type Values Removed Values Added
Description An improper input validation and protocol compliance vulnerability in free5GC v4.0.1 allows remote attackers to cause a denial of service. The UPF incorrectly accepts a malformed PFCP Association Setup Request, violating 3GPP TS 29.244. This places the UPF in an inconsistent state where a subsequent valid PFCP Session Establishment Request triggers a cascading failure, disrupting the SMF connection and causing service degradation.
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-02-13T20:58:52.885Z

Reserved: 2026-01-09T00:00:00.000Z

Link: CVE-2025-70123

cve-icon Vulnrichment

Updated: 2026-02-13T20:58:47.162Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-13T17:16:12.210

Modified: 2026-02-13T21:43:11.137

Link: CVE-2025-70123

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses