AlertsCitrix Security Advisory

Number: AV21-571
Date: 9 November 2021

On 9 November 2021 Citrix published a Security Bulletin to address vulnerabilities in the following products:

  • Citrix ADC and Citrix Gateway 13.0 – versions prior to 13.0-83.27
  • Citrix ADC and Citrix Gateway 12.1 – versions prior to 12.1-63.22
  • Citrix ADC and NetScaler Gateway 11.1 – versions prior to 11.1-65.23
  • Citrix ADC 12.1-FIPS – versions prior to 12.1-55.257
  • Citrix SD-WAN WANOP Edition 11.4 – versions prior to 11.4.2
  • Citrix SD-WAN WANOP Edition 10.2 – versions prior to 10.2.9c

Exploitation of these vulnerabilities could result in a denial of service.

The Cyber Centre encourages users and administrators to review the provided web link and apply the necessary updates.

Citrix Security Bulletin (CTX330728)

Note to Readers

The Canadian Centre for Cyber Security (Cyber Centre) operates as part of the Communications Security Establishment.  We are Canada’s national authority on cyber security and we lead the government’s response to cyber security events. As Canada's national computer security incident response team, the Cyber Centre works in close collaboration with government departments, critical infrastructure, Canadian businesses and international partners to prepare for, respond to, mitigate, and recover from cyber events. We do this by providing authoritative advice and support, and coordinating information sharing and incident response. The Cyber Centre is outward-facing, welcoming partnerships that help build a stronger, more resilient cyber space in Canada.

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