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CVE-2025-69248

free5GC has Array Index Out of Bounds in AMF Leading to Denial of Service

Published: Feb 23, 2026Updated: Feb 25, 2026 Sources: CVE List NVDCWE-129
7.5HIGH
NVD MITRE
EPSS Score
0.6%
Top 56.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

free5GC is 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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-129

Affected Products

free5gc
oss-projectaka free5gc udm, free5gc smf, smf, udm
amfOn-premNetwork Device
Networking Infrastructure / router-switch

Exploitability

Official Patch Available
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References

https://github.com/free5gc/free5gc/issues/747
github.com
https://github.com/free5gc/free5gc/security/advisories/GHSA-h6xc-8vvf-jcjp
github.com
https://github.com/free5gc/nas/commit/0329a7ac3f314f210366c1b3c33dc29eded4ac5f
github.com
and 1 more references View all →

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