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.
References
| Link | Resource |
|---|---|
| https://github.com/free5gc/free5gc/issues/746 | Exploit Issue Tracking Vendor Advisory |
Configurations
History
18 Feb 2026, 15:40
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:free5gc:free5gc:4.0.1:*:*:*:*:*:*:* | |
| References | () https://github.com/free5gc/free5gc/issues/746 - Exploit, Issue Tracking, Vendor Advisory | |
| First Time |
Free5gc free5gc
Free5gc |
13 Feb 2026, 21:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
| CWE | CWE-122 |
13 Feb 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-02-13 17:16
Updated : 2026-02-18 15:40
NVD link : CVE-2025-70122
Mitre link : CVE-2025-70122
CVE.ORG link : CVE-2025-70122
JSON object : View
Products Affected
free5gc
- free5gc
CWE
CWE-122
Heap-based Buffer Overflow
