What’s Vulnerable › Vulnerabilities

CVE-2023-37013

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-01-22 · updated 2026-06-17
• Weakness: CWE-617

Description

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: through 2.6.4

References

• https://cellularsecurity.org/ransacked

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