Denial of Service Vulnerability in Free5GC by Free5GC
CVE-2025-65561

7.5HIGH

Key Information:

Vendor

Free5GC

Status
Free5GC
Vendor
CVE Published:
18 December 2025

What is CVE-2025-65561?

A flaw was discovered in the LocalNode.Sess function of Free5GC version 4.1.0. This vulnerability allows attackers to effectuate a denial of service by sending specially crafted headers, specifically the Local SEID, during the PFCP Session Modification Request process. Such an exploit can cause disruptions, impacting service availability and overall performance.

References

https://github.com/free5gc/free5gc/issues/730
https://github.com/free5gc/go-upf/pull/80

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.