VULNERABILITY INTELLIGENCE

CVE-2021-40122

CVSS score5.9 MEDIUM
EPSS probability1.16%
CISA KEVNot currently listed
Published2021-10-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • CWE-404: Improper Resource Shutdown or Release

Primary references