CVE-2023-37013: OPEN5GS

High severity, CVSS 7.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Open5GS MME versions <= 2.6.4 contains an assertion that can be remotely triggered via a sufficiently large ASN.1 packet over the S1AP interface. An attacker may repeatedly send such an oversized packet to cause the `ogs_sctp_recvmsg` routine to reach an unexpected network state and crash, leading to denial of service.

Affected products

• OPEN5GS OPEN5GS: up to and including 2.6.4

Published 2025-01-22. Last modified 2026-06-17.