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.
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History
Mon, 23 Feb 2026 22:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | free5GC has Heap Buffer Overflow in UPF Leading to Denial of Service | |
| Weaknesses | CWE-122 | |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-02-23T21:38:15.526Z
Reserved: 2025-12-30T14:06:18.104Z
Link: CVE-2025-69247
No data.
Status : Received
Published: 2026-02-23T22:16:21.057
Modified: 2026-02-23T22:16:21.057
Link: CVE-2025-69247
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OpenCVE Enrichment
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Weaknesses