What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2022-03-25
• EPSS: 53.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-23 · updated 2026-06-17
• Weakness: CWE-284

Description

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 Storage Zones Controller: before 5.11.20 — fixed in 5.11.20
• Citrix ShareFile Storage Zones Controller: 5.11.20

How to fix

Upgrade to a fixed version: Citrix ShareFile Storage Zones Controller 5.11.20. Check the vendor advisory for mitigations.

References

• https://support.citrix.com/article/CTX328123
• https://support.citrix.com/article/CTX328123
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22941

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