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.
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
History
25 Feb 2026, 16:21
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/free5gc/free5gc/issues/746 - Exploit, Issue Tracking, Patch, Vendor Advisory | |
| References | () https://github.com/free5gc/free5gc/security/advisories/GHSA-gf69-93xr-p23g - Patch, Vendor Advisory | |
| References | () https://github.com/free5gc/go-upf/commit/b798fe5ee6a984be492fa53958dd5f1305469f85 - Patch | |
| References | () https://github.com/free5gc/go-upf/pull/85 - Issue Tracking, Patch | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
| First Time |
Free5gc go-upf
Free5gc |
|
| CPE | cpe:2.3:a:free5gc:go-upf:*:*:*:*:*:go:*:* | |
| Summary |
|
23 Feb 2026, 22:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
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
