CVE-2025-63679: FREE5GC

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

free5gc v4.1.0 and before is vulnerable to Buffer Overflow. When AMF receives an UplinkRANConfigurationTransfer NGAP message from a gNB, the AMF process crashes.

Affected products

• FREE5GC FREE5GC: up to and including 4.1.0

Published 2025-11-12. Last modified 2026-06-17.