CVE-2021-40122 MEDIUM

CVE-2021-40122: Cisco Meeting Server Call Bridge Denial of Service Vulnerability

Vendor Cisco
Product Cisco Meeting Server
Weakness CWE-399
Published October 21, 2021
Last update November 7, 2024

CVSS base score

5.9/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in an API of the Call Bridge feature of Cisco Meeting Server could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper handling of large series of message requests. An attacker could exploit this vulnerability by sending a series of messages to the vulnerable API. A successful exploit could allow the attacker to cause the affected device to reload, dropping all ongoing calls and resulting in a DoS condition.

Key dates

02Disclosure timeline

October 21, 2021 CVE published
November 7, 2024 Record updated