free5GC is an an open-source project for 5th generation (5G) mobile core networks. Versions up to and including 1.4.1 of free5GC's AMF service have a Buffer Overflow vulnerability leading to Denial of Service. Remote unauthenticated attackers can crash the AMF service by sending a specially crafted NAS Registration Request with a malformed 5GS Mobile Identity, causing complete denial of service for the 5G core network. All deployments of free5GC using the AMF component may be affected. Pull request 43 of the free5gc/nas repo contains a fix. No direct workaround is available at the application level. Applying the official patch is recommended.
History

Mon, 23 Feb 2026 22:00:00 +0000

Type Values Removed Values Added
Description free5GC is an an open-source project for 5th generation (5G) mobile core networks. Versions up to and including 1.4.1 of free5GC's AMF service have a Buffer Overflow vulnerability leading to Denial of Service. Remote unauthenticated attackers can crash the AMF service by sending a specially crafted NAS Registration Request with a malformed 5GS Mobile Identity, causing complete denial of service for the 5G core network. All deployments of free5GC using the AMF component may be affected. Pull request 43 of the free5gc/nas repo contains a fix. No direct workaround is available at the application level. Applying the official patch is recommended.
Title free5GC has Array Index Out of Bounds in AMF Leading to Denial of Service
Weaknesses CWE-129
References
Metrics cvssV4_0

{'score': 6.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-23T23:43:10.413Z

Reserved: 2025-12-30T14:06:53.248Z

Link: CVE-2025-69248

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-02-23T22:16:21.220

Modified: 2026-02-23T22:16:21.220

Link: CVE-2025-69248

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.