CVE-2023-37005

Name: CVE-2023-37005
Creator: NVD / NIST
Published: 2025-01-22T15:15:10.067+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.26%

Last modified Jun 17, 2026

CVE-2023-37005 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS Probability

0.26%

17.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-617

Affected Software

Vendor	Product	Versions
Open5gs	Open5gs	<= 2.6.4

References

https://cellularsecurity.org/ransackedExploit, Technical Description, Third Party Advisory

Timeline

Published: Jan 22, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-37005?

How severe is CVE-2023-37005?

CVE-2023-37005 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.

How do I fix CVE-2023-37005?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-37005?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST