High severity7.5NVD Advisory· Published Dec 7, 2021· Updated Jun 17, 2026
CVE-2021-22955
CVE-2021-22955
Description
A unauthenticated denial of service vulnerability exists in Citrix ADC <13.0-83.27, <12.1-63.22 and 11.1-65.23 when configured as a VPN (Gateway) or AAA virtual server could allow an attacker to cause a temporary disruption of the Management GUI, Nitro API, and RPC communication.
Affected products
2- Citrix/ADCdescription
- Range: <13.0-83.27, <12.1-63.22, <11.1-65.23
Patches
Vulnerability mechanics
References
1- support.citrix.com/article/CTX330728nvdVendor Advisory
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