How serious is CVE-2025-70121?

This vulnerability has a CVSS score of 7.5 out of 10, classified as HIGH severity. No public exploit code has been identified yet.

Which products are affected by CVE-2025-70121?

CVE-2025-70121 affects free5gc free5gc. Check the full CVE details for specific version information.

How do I fix CVE-2025-70121?

To remediate CVE-2025-70121, check for security patches from free5gc. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2025-70121

High

|7.5

No Exploit

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows attackers to crash the AMF component of free5GC, causing a denial of service, by sending a specially crafted registration request with a specific mobile identity. The attack requires the attacker to be able to send messages to the system, which could disrupt services for legitimate users.

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.

CVSS Vector Analysis

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactNone

Integrity ImpactNone

Availability ImpactHigh

ScopeUnchanged

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Resources

Search for proof-of-concept code and exploit modules

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Official References

NIST NVD

Est. Bounty

$2,053($1K-$5K)

Vendor Response

Grade APatched in 4 days

Quick Information

Published

Feb 13, 2026

7 days ago

Last Modified

Feb 18, 2026

2 days ago

Vendor

free5gc

Product

free5gc

Related Vulnerabilities

CVE-2025-70123High

This vulnerability allows remote attackers to crash the free5GC system by sending a specially crafted request, which puts the system in a confused state. If this happens, it can lead to service interruptions, but the attacker needs to send the malformed request to exploit this flaw.

CVE-2025-70122High

This vulnerability allows remote attackers to crash the UPF component of free5GC, causing a denial of service by sending a specially crafted request that tricks the system into trying to use more memory than it can handle. To exploit this, the attacker needs to send a specific type of message that exceeds the expected size, leading to a system failure.