CVE-2017-6316: Citrix Multiple Products Remote Code Execution Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2022-03-25. EPSS: 73% chance of exploitation in the next 30 days.

Citrix NetScaler SD-WAN devices through v9.1.2.26.561201 allow remote attackers to execute arbitrary shell commands as root via a CGISESSID cookie. On CloudBridge (the former name of NetScaler SD-WAN) devices, the cookie name was CAKEPHP rather than CGISESSID.

Affected products

• Citrix NetScaler SD-WAN: up to and including 9.1.2.26.561201

Published 2017-07-20. Last modified 2026-06-17.