What is CVE-2025-70121?

CVE-2025-70121 is a high-severity vulnerability in Free5gc, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-02-13.

How severe is CVE-2025-70121?

High severity. CVSS v3 base score is 7.5 out of 10.

Out-of-bounds Read in Free5gc

CVE-2025-70121

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…

Vulnerability class: Buffer Overflow

EPSS: 0.003 (25.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Free5gc — versions 4.0.1
N/a — versions n/a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

cve@mitre.org (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2025-70121?: CVE-2025-70121 is a high-severity vulnerability in Free5gc, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-02-13.
How severe is CVE-2025-70121?: High severity. CVSS v3 base score is 7.5 out of 10.