CVE-2023-37021

HighCVSS 8.6/10Last modified Jun 17, 2026

Description

Open5GS MME version <= 2.6.4 contains 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 Failure` message missing a required `MME_UE_S1AP_ID` field to repeatedly crash the MME, resulting in denial of service.

Metrics

CVSS 3.1 8.6/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Weakness enumeration

CWE-617

Affected software

No affected versions have been published.

Timeline

Published
Jan 22, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

Related CVEs from 2023

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CVE-2023-37021: High severity, CVSS 8.6 | Vulnix