CVE-2023-37021

HIGH EPSS 50.4%
Published Jan 22, 20251y ago · Modified Jun 17, 20262w ago
8.6 CVSS 3.1
High
Find Similar
Published Jan 22, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

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` field to repeatedly crash the MME, resulting in denial of service.

CVSS Details

Base Score
8.6
Exploitability
3.9
Impact
4.0
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
50.4% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-617

Affected Products 1

VendorProductVersionRange
open5gsopen5gs* ≤2.6.4

References 1

  • cellularsecurity.org https://cellularsecurity.org/ransacked
    ExploitTechnical DescriptionThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.