What is CVE-2023-37021?

CVE-2023-37021 is a high-severity vulnerability in Open5gs, classified under Reachable Assertion. CVSS score: 8.6/10. Published 2025-01-22.

How severe is CVE-2023-37021?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Open5gs

CVE-2023-37021

Open5GS MME version <= 2.6.4 contains an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send a `UE Context Modification Failure` message missing a required `MME_UE_S1AP_ID` fi…

EPSS: 0.008 (50.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Open5gs
N/a — versions n/a

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

cve@mitre.org (Technical Description, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-37021?: CVE-2023-37021 is a high-severity vulnerability in Open5gs, classified under Reachable Assertion. CVSS score: 8.6/10. Published 2025-01-22.
How severe is CVE-2023-37021?: High severity. CVSS v3 base score is 8.6 out of 10.