CVE-2021-22956: High severity Citrix Application Delivery Controller Firmware vulnerability
An uncontrolled resource consumption vulnerability exists in Citrix ADC <13.0-83.27, <12.1-63.22 and 11.1-65.23 that could allow an attacker with access to NSIP or SNIP with management interface access to cause a temporary disruption of the Management GUI, Nitro API, and RPC communication.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2021-22956?
CVE-2021-22956 is an uncontrolled resource consumption vulnerability in Citrix ADC <13.0-83.27, <12.1-63.22, and 11.1-65.23 that could allow an attacker to cause a temporary disruption of the Management GUI, Nitro API, and RPC communication.
Which software versions are affected by CVE-2021-22956?
CVE-2021-22956 affects Citrix ADC versions <13.0-83.27, <12.1-63.22, and 11.1-65.23.
What is the severity of CVE-2021-22956?
CVE-2021-22956 has a severity rating of 7.5 (high).
How can an attacker exploit CVE-2021-22956?
An attacker with access to NSIP or SNIP with management interface access can exploit CVE-2021-22956.
How can CVE-2021-22956 be mitigated?
Applying the recommended patches from Citrix is the best way to mitigate CVE-2021-22956.