CVE-2025-63679

Name: CVE-2025-63679
Creator: NVD / NIST
Published: 2025-11-12T19:15:37.457+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.35%

Last modified Jun 17, 2026

CVE-2025-63679 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.35%

26.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Free5gc	Free5gc	<= 4.1.0

References

https://gist.github.com/DDGod2025/5483d94b028d7a0c111ca23844e8a94dExploit, Third Party Advisory
https://github.com/free5gc/free5gc/issues/725Exploit, Issue Tracking

Timeline

Published: Nov 12, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-63679?

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.

How severe is CVE-2025-63679?

CVE-2025-63679 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2025-63679?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-63679?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST