CVE-2021-40122: Cisco Meeting Server Call Bridge Denial of Service Vulnerability
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.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2021-40122?
CVE-2021-40122 is a vulnerability in the Call Bridge feature of Cisco Meeting Server that could allow an unauthenticated attacker to cause a denial of service (DoS) condition.
How severe is CVE-2021-40122?
CVE-2021-40122 has a severity score of 7.5, indicating a high severity.
What software is affected by CVE-2021-40122?
Cisco Meeting Server versions up to and including 3.2.3 are affected by CVE-2021-40122.
How can an attacker exploit CVE-2021-40122?
An attacker can exploit CVE-2021-40122 by sending a large series of message requests to the API of the Call Bridge feature of Cisco Meeting Server.
Is there a fix for CVE-2021-40122?
Yes, Cisco has released a security advisory with mitigation details for CVE-2021-40122. Please refer to the reference link for more information.