CVE-2026-75439

Received Received - Intake

Denial of Service in Free5GC via UPF Component

Publication date: 2026-09-04

Last updated on: 2026-09-14

Assigner: MITRE

Description

An issue in Free5GC v.4.2.2 allows a remote attacker to cause a denial of service via the UPF component

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-04

Last Modified

2026-09-14

Generated

2026-09-25

AI Q&A

2026-09-05

EPSS Evaluated

2026-09-23

NVD

CVE-2026-75439

Affected Vendors & Products

Vendor	Product	Version / Range
free5gc	free5gc	4.2.2

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-476	The product dereferences a pointer that it expects to be valid but is NULL.

Attack-Flow Graph

Executive Summary

This vulnerability is a denial of service issue in Free5GC version 4.2.2. It allows a remote attacker to disrupt the UPF component, which is part of the User Plane Function in 5G networks. This could lead to network service disruptions or unavailability.

Impact Analysis

If you are using Free5GC v4.2.2, this vulnerability could cause your network services to become unavailable or slow down significantly. This may affect your ability to provide 5G services to users or other systems relying on Free5GC.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability only describes a denial of service issue in Free5GC's UPF component without mentioning data protection or regulatory implications.

Mitigation Strategies

Update Free5GC to the latest version beyond v4.2.2 to address the UPF DoS vulnerability. Monitor network traffic for unusual patterns targeting the UPF component and restrict access to UPF ports via firewall rules.

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