What’s Vulnerable › Vulnerabilities

CVE-2023-37005

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% 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 contain an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send an `Initial Context Setup Failure` message missing a required `MME_UE_S1AP_ID` field to repeatedly crash the MME, resulting in denial of service.

Affected products

• Open5GS: through 2.6.4

References

• https://cellularsecurity.org/ransacked

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