NULL Pointer Dereference in AMF NGAP Dispatcher of free5gc by Free5GC
CVE-2026-30056

7.5HIGH

Key Information:

Vendor

Free5GC

Status
free5gc
Vendor
CVE Published:
27 August 2026

What is CVE-2026-30056?

The AMF NGAP Dispatcher component in free5gc v4.0.1 is susceptible to a NULL pointer dereference vulnerability. Attackers can exploit this flaw to induce a Denial of Service (DoS) by sending specially crafted NGAP messages during the initialization of a new Radio Access Network (RAN) connection. This vulnerability poses a significant risk to the stability and availability of the affected systems, emphasizing the need for immediate remediation to protect network operations.

References

https://github.com/free5gc/free5gc/issues/768

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

.