Vulnerability Bulletins

Cisco IOS XR Software Connectivity Fault Management Denial of Service Vulnerability

System information

Affected software Cisco


A vulnerability in the Connectivity Fault Management (CFM) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to incorrect processing of invalid continuity check messages (CCMs). An attacker could exploit this vulnerability by sending crafted CCMs to an affected device. A successful exploit could allow the attacker to cause the CFM service to crash when a user displays

More info:

Standar resources

Property Value
CVE CVE-2023-20233.

Version history

Version Comments Date
1.0 Advisory issued 2023-09-14
Ministerio de Defensa