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Citrix Gateway and Citrix ADC Security Bulletin for CVE-2022-27510 CVE-2022-27513 and CVE-2022-27516

Threat alert details

We would like to bring your attention to a recent security bulletin surrounding Citrix Gateway and Citrix ADC. Vulnerabilities have been discovered in Citrix Gateway and Citrix ADC, listed below. Note that only appliances that are operating as a Gateway (appliances using the SSL VPN functionality or deployed as an ICA proxy with authentication enabled) are affected by the first issue, which is rated as a Critical severity vulnerability.



Affected Products



Unauthorized access to Gateway user capabilities

Citrix Gateway, Citrix ADC

Appliance must be configured as a VPN (Gateway).


Remote desktop takeover via phishing

​Citrix Gateway, Citrix ADC

​Appliance must be configured as a

  • VPN (Gateway)

and the RDP proxy functionality must be configured.


User login brute force protection functionality bypass

​Citrix Gateway, Citrix ADC

Appliance must be configured as a

  • VPN (Gateway)


  • AAA virtual server

and the user lockout functionality “Max Login Attempts” must be configured

Affected Products

The following versions of Citrix ADC and Citrix Gateway are affected

  • Citrix ADC and Citrix Gateway 13.1 before 13.1-33.47
  • Citrix ADC and Citrix Gateway 13.0 before 13.0-88.12
  • Citrix ADC and Citrix Gateway 12.1 before
  • Citrix ADC 12.1-FIPS before 12.1-55.289
  • Citrix ADC 12.1-NDcPP before 12.1-55.289


Affected customers of Citrix ADC and Citrix Gateway are recommended to install the relevant updated versions of Citrix ADC or Citrix Gateway as soon as possible:

  • Citrix ADC and Citrix Gateway 13.1-33.47 and later releases
  • Citrix ADC and Citrix Gateway 13.0-88.12 and later releases of 13.0
  • Citrix ADC and Citrix Gateway 12.1-65.21 and later releases of 12.1
  • Citrix ADC 12.1-FIPS 12.1-55.289 and later releases of 12.1-FIPS
  • Citrix ADC 12.1-NDcPP 12.1-55.289 and later releases of 12.1-NDcPP

Please note that Citrix ADC and Citrix Gateway versions prior to 12.1 are EOL and customers on those versions are recommended to upgrade to one of the supported versions.