CVE-2025-69247: free5GC has Heap Buffer Overflow in UPF Leading to Denial of Service
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.
Affected Software
Remediation
Patch Available
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2025-69247?
CVE-2025-69247 is classified as a high-severity vulnerability due to its potential to cause Denial of Service.
How do I fix CVE-2025-69247?
The recommended fix for CVE-2025-69247 is to upgrade to version 1.2.8 or later of the free5GC go-upf.
What component is affected by CVE-2025-69247?
CVE-2025-69247 affects the User Plane Function (UPF) component of the free5GC project.
What type of vulnerability is CVE-2025-69247?
CVE-2025-69247 is a Heap-based Buffer Overflow vulnerability.
What can be the impact of CVE-2025-69247?
The impact of CVE-2025-69247 can result in a Denial of Service, affecting the availability of the service.