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CVE-2025-56394

Good to know:

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Date: September 22, 2025

Free5gc 4.0.1 is vulnerable to Buffer Overflow. The AMF incorrectly validates the 5GS mobile identity, resulting in slice reference overflow.

Severity Score

Related Resources (4)

https://nvd.nist.gov/vuln/detail/CVE-2025-56394
https://gist.github.com/DDGod2025/532691e3e2db9b47c67c3d153c026e62
https://github.com/free5gc/free5gc/issues/690
https://www.mend.io/vulnerability-database/CVE-2025-56394

Severity Score

Weakness Type (CWE)

Heap-based Buffer Overflow

CWE-122

Top Fix

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Upgrade Version

Upgrade to version github.com/free5gc/nas - v1.2.1

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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