Denial of Service Vulnerability in Free5GC by Free5GC
CVE-2026-75439

7.5HIGH

Key Information:

Vendor

Free5GC

Status
Free5GC
Vendor
CVE Published:
4 September 2026

What is CVE-2026-75439?

A remote attacker can exploit a vulnerability in Free5GC version 4.2.2, targeting the User Plane Function (UPF) component to achieve a denial of service. By leveraging this flaw, an unauthorized user could disrupt services, potentially affecting the integrity and availability of the network, and impacting overall operational efficiency.

References

https://github.com/free5gc/free5gc/issues/1059
https://github.com/free5gc/go-upf/pull/97
https://gist.github.com/hackeryounow/0f434c03008462e6eec3...

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

.