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CVE-2026-42082

3.7 · LOW

free5GC is an open-source implementation of the 5G core network.

Published May 27, 2026CWE-358EPSS 0.25%

Overview

CVE-2026-42082 is a low-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 3.7 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, the AMF in Free5GC does not enforce the concurrent security procedure rules defined in 3GPP TS 33.501 §6.9.5.1. The AMF does not check for ongoing N2 handover procedures before initiating a NAS Security Mode Command, and vice versa. This can lead to mismatches between NAS and AS security contexts in the network and the UE. This vulnerability is fixed in 4.2.2.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

GitHubgithub.com/free5gc/free5gc/security/advisories/GHSA-vrrx-58h3-prmhGitHubgithub.com/free5gc/free5gc/security/advisories/GHSA-vrrx-58h3-prmh

How CyberStrike helps

Frequently asked questions

What is CVE-2026-42082?

CVE-2026-42082 is a low-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 3.7 (LOW).

How severe is CVE-2026-42082?

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-42082?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2026-42082?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-42082 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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