Home/CVE/free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC project. Vers
CVE

CVE-2025-69247

free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC project. Vers

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.

HIGH · CVSS 7.5 EPSS 0.00246
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-122Heap-based Buffer Overflow
▤

Affected Products & Versions

1
free5gc go-upf< 1.2.8
⚠

Public Exploits & PoCs

1
pocgithub.com · issues/746github.com
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Feb 2026 · 10:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/free5gc/free5gc/security/advisories/GHSA-gf69-93xr-p23gPatchVendor Advisory
https://github.com/free5gc/go-upf/commit/b798fe5ee6a984be492fa53958dd5f1305469f85Patch
https://github.com/free5gc/go-upf/pull/85Issue TrackingPatch
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