Buffer Overflow Vulnerability in Free5gc by Free5GC
CVE-2025-56394

7.5HIGH

Key Information:

Vendor

Free5GC

Status
Free5gc
Vendor
CVE Published:
23 September 2025

What is CVE-2025-56394?

Free5gc version 4.0.1 contains a vulnerability where the AMF component fails to properly validate the 5GS mobile identity. This flaw can lead to slice reference overflow, potentially allowing an attacker to execute arbitrary code or cause service disruptions. Users of Free5gc should review their systems for this flaw and implement necessary mitigations to secure their deployments.

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References

https://github.com/free5gc/free5gc/issues/690
https://gist.github.com/DDGod2025/532691e3e2db9b47c67c3d1...

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

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