CVE-2025-69247

free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow (CWE-122) vulnerability leading to Denial of Service. Remote attackers can crash the UPF network element by sending a specially crafted PFCP Session Modification Request with an invalid SDF Filter length field. This causes a heap buffer overflow, resulting in complete service disruption for all connected UEs and potential cascading failures affecting the SMF. All deployments of free5GC using the UPF component may be affected. Version 1.2.8 of go-upf contains a fix.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/free5gc/free5gc/issues/746	Exploit Issue Tracking Patch Vendor Advisory
https://github.com/free5gc/free5gc/security/advisories/GHSA-gf69-93xr-p23g	Patch Vendor Advisory
https://github.com/free5gc/go-upf/commit/b798fe5ee6a984be492fa53958dd5f1305469f85	Patch
https://github.com/free5gc/go-upf/pull/85	Issue Tracking Patch

Configurations

Configuration 1 (hide)

cpe:2.3:a:free5gc:go-upf:*:*:*:*:*:go:*:*

History

No history.

Information

Published : 2026-02-23 22:16

Updated : 2026-02-25 16:21

NVD link : CVE-2025-69247

Mitre link : CVE-2025-69247

CVE.ORG link : CVE-2025-69247

JSON object : View

Products Affected

free5gc

go-upf

CWE

CWE-122

Heap-based Buffer Overflow

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