TI-2023-18743 Aliases CVE-2023-37009 GHSA-r492-f75w-fpq9

Open5GS MME versions <= 2.6.4 contain an assertion that can be remotely triggered via a…

LOW 29CWE-617Published 2025-01-22 · Updated 2025-01-27

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: Low · Low · Low
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-617.

Summary

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 `Handover Notification` message missing a required `MME_UE_S1AP_ID` field to repeatedly crash the MME, resulting in denial of service.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00513 43rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:open5gs:open5gs::::::::	up to 2.6.4	Vulnerable	Open5GS

cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:* Versions up to 2.6.4 Vulnerable ·Open5GS

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-37009
2026-10-03 Alias added: GHSA-r492-f75w-fpq9

References

Exploit 1

https://cellularsecurity.org/ransacked

TI-2024-26883 open5gs v2.6.4 is vulnerable to Buffer Overflow. CVSS 3.1CRITICAL 9.8
TI-2024-26882 Open5GS v2.6.4 is vulnerable to Buffer Overflow. CVSS 3.1CRITICAL 9.8
TI-2024-22649 Open5GS MME versions <= 2.6.4 contains an assertion that can be remotely triggered via a… CVSS 3.1HIGH 8.6
TI-2023-18757 Open5GS MME versions <= 2.6.4 contain a reachable assertion in the `Uplink NAS Transport`… CVSS 3.1HIGH 8.6
TI-2023-18755 Open5GS MME version <= 2.6.4 contains an assertion that can be remotely triggered via a… CVSS 3.1HIGH 8.6
TI-2023-18754 Open5GS MME versions <= 2.6.4 contain an assertion that can be remotely triggered via a… CVSS 3.1HIGH 8.6

See all 153 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences