CVE-2025-70122

Published February 13th, 2026

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CVSS v3

7.5

HIGH

CVSS v2

N/A

Affected

PROJECT

Description

A heap buffer overflow vulnerability in the UPF component of free5GC v4.0.1 allows remote attackers to cause a denial of service via a crafted PFCP Session Modification Request. The issue occurs in the SDFFilterFields.UnmarshalBinary function (sdf-filter.go) when processing a declared length that exceeds the actual buffer capacity, leading to a runtime panic and UPF crash.

free5gc/free5gc

Open source 5G core network based on 3GPP R15

GitHub

2.32K