An improper input validation and protocol compliance vulnerability in free5GC v4.0.1 allows remote attackers to cause a denial of service. The UPF incorrectly accepts a malformed PFCP Association Setup Request, violating 3GPP TS 29.244. This places the UPF in an inconsistent state where a subsequent valid PFCP Session Establishment Request triggers a cascading failure, disrupting the SMF connection and causing service degradation.
References
| Link | Resource |
|---|---|
| https://github.com/free5gc/free5gc/issues/745 | Exploit Issue Tracking Vendor Advisory |
Configurations
History
18 Feb 2026, 15:40
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Free5gc free5gc
Free5gc |
|
| CPE | cpe:2.3:a:free5gc:free5gc:4.0.1:*:*:*:*:*:*:* | |
| References | () https://github.com/free5gc/free5gc/issues/745 - Exploit, Issue Tracking, Vendor Advisory |
13 Feb 2026, 21:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
| CWE | CWE-20 |
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-2025-70123
Mitre link : CVE-2025-70123
CVE.ORG link : CVE-2025-70123
JSON object : View
Products Affected
free5gc
- free5gc
CWE
CWE-20
Improper Input Validation
