CVEvulnerability

CVE-2026-42082

5.4 MEDIUM Published 2026-05-27 Modified 2026-10-14 Official page ↗
Status
Analyzed
Published
2026-05-27
Last modified
2026-10-14
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.7 LOW — CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
CVSS 3.1 ([email protected])
5.4 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Weaknesses
CWE-358

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.

Affected configurations

• free5gc free5gc (< 4.2.2)

Related

Weakness · CWE (1)

  • CWE-358 Improperly Implemented Security Check for Standard weakness

References