CVE-2025-70123

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/13/2026

Last Modified2/18/2026

Sourcenvd

Honeypot Sightings0

Affected Products

free5gc:free5gc

Weaknesses (CWE)

CWE-20

References

https://github.com/free5gc/free5gc/issues/745(cve@mitre.org)

IOC Correlations

No correlations recorded

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