A vulnerability has been discovered in Citrix Gateway and Citrix ADC, listed below, that, if exploited, could allow an unauthenticated remote attacker to perform arbitrary code execution on the appliance.

Impacted Versions

• Citrix ADC and Citrix Gateway 13.0 before 13.0-58.32
• Citrix ADC and Citrix Gateway 12.1 before 12.1-65.25
• Citrix ADC 12.1-FIPS before 12.1-55.291
• Citrix ADC 12.1-NDcPP before 12.1-55.291

Remediation / Mitigation

Exploits of this issue on unmitigated appliances in the wild have been reported. Citrix strongly urges affected customers of Citrix ADC and Citrix Gateway to install the relevant updated versions of Citrix ADC or Citrix Gateway as soon as possible:

• Citrix ADC and Citrix Gateway 13.0-58.32 and later releases
• Citrix ADC and Citrix Gateway 12.1-65.25 and later releases of 12.1
• Citrix ADC 12.1-FIPS 12.1-55.291 and later releases of 12.1-FIPS 
• Citrix ADC 12.1-NDcPP 12.1-55.291 and later releases of 12.1-NDcPP

Reference

https://support.citrix.com/article/CTX474995/citrix-adc-and-citrix-gateway-security-bulletin-for-cve202227518

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