CVE-2025-70121
7.5 · HIGHOverview
CVE-2025-70121 is a high-severity vulnerability affecting free5gc free5gc. It was published on February 13, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from free5gc. Update free5gc to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
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References
Frequently Asked Questions
What is CVE-2025-70121?
CVE-2025-70121 is a high-severity vulnerability affecting free5gc free5gc. It was published on February 13, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2025-70121?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-70121?
Check the references section for vendor advisories and patches from free5gc. Update free5gc to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-70121?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-70121 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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