Is CVE-2026-42082 actively exploited?

No active exploitation of CVE-2026-42082 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42082 be exploited remotely?

Yes. CVE-2026-42082 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42082?

CVE-2026-42082 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2026-42082

CWE-358Published: May 27, 2026· Updated: May 28, 2026

5.4

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:3.3th

Official 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.

NVD Source

Technical Analysis

CVE-2026-42082 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.