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High severity7.5NVD Advisory· Published Feb 13, 2026· Updated Jun 17, 2026

CVE-2025-70121

CVE-2025-70121

Description

An array index out of bounds vulnerability in the AMF component of free5GC v4.0.1 allows remote attackers to cause a denial of service via a crafted 5GS Mobile Identity in a NAS Registration Request message. The issue occurs in the GetSUCI method (NAS_MobileIdentity5GS.go) when accessing index 5 of a 5-element array, leading to a runtime panic and AMF crash.

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Affected products

4
  • Free5gc/Free5gc3 versions
    cpe:2.3:a:free5gc:free5gc:4.0.1:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:free5gc:free5gc:4.0.1:*:*:*:*:*:*:*
    • (no CPE)
    • (no CPE)range: <4.0.1
  • Free5gc/Amfllm-fuzzy
    Range: <4.0.1

Patches

Vulnerability mechanics

References

1

News mentions

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