CVE-2019-16026 MEDIUM

CVE-2019-16026: Cisco Mobility Management Entity Denial of Service Vulnerability

Vendor Cisco
Product Cisco ASR 5000 Series Software
Weakness CWE-20 · Input validation
Published January 26, 2020
Last update November 15, 2024

CVSS base score

6.8/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

What the vulnerability does

01Description

A vulnerability in the implementation of the Stream Control Transmission Protocol (SCTP) on Cisco Mobility Management Entity (MME) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an eNodeB that is connected to an affected device. The vulnerability is due to insufficient input validation of SCTP traffic. An attacker could exploit this vulnerability by leveraging a man-in-the-middle position between the eNodeB and the MME and then sending a crafted SCTP message to the MME. A successful exploit would cause the MME to stop sending SCTP messages to the eNodeB, triggering a DoS condition.

Key dates

02Disclosure timeline

January 26, 2020 CVE published
November 15, 2024 Record updated