How serious is CVE-2025-70123?

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-2025-70123?

CVE-2025-70123 affects free5gc free5gc. Check the full CVE details for specific version information.

How do I fix CVE-2025-70123?

To remediate CVE-2025-70123, 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-2025-70123

High

|7.5

No Exploit

Plain English Summary

AI-powered analysis for quick understanding

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.

Technical Description

An improper input validation and protocol compliance vulnerability in free5GC v4.0.1 allows remote attackers to cause a denial of service. The UPF incorrectly accepts a malformed PFCP Association Setup Request, violating 3GPP TS 29.244. This places the UPF in an inconsistent state where a subsequent valid PFCP Session Establishment Request triggers a cascading failure, disrupting the SMF connection and causing service degradation.

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

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CVE-2025-70121High

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