VULNERABILITY INTELLIGENCE

CVE-2023-37016

CVSS score8.6 HIGH

EPSS probability0.81%

CISA KEVNot currently listed

Published2025-01-22

Last modified2026-06-17

Description

Open5GS MME versions <= 2.6.4 contain an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send a `UE Context Modification Response` message missing a required `MME_UE_S1AP_ID` field to repeatedly crash the MME, resulting in denial of service.