CVE-2025-70122 – Free5GC UPF Heap Buffer Overflow

CVE ID : CVE-2025-70122

Published : Feb. 13, 2026, 5:16 p.m. | 1 hour, 13 minutes ago

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.

Severity: 0.0 | NA

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