CVE-2021-22941: Citrix ShareFile Improper Access Control Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2022-03-25. EPSS: 53.6% chance of exploitation in the next 30 days.

Improper Access Control in Citrix ShareFile storage zones controller before 5.11.20 may allow an unauthenticated attacker to remotely compromise the storage zones controller.

Affected products

• Citrix ShareFile Storagezones Controller: before 5.11.20 (fixed in 5.11.20)

Published 2021-09-23. Last modified 2026-06-17.