CVE-2021-22941

9.8 criticalKEVEPSS 54%

Critical (9.8) in Citrix ShareFile. In CISA KEV since 2022-03-25, with known ransomware use. EPSS 54% 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.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 54% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
CISA KEV: listed 2022-03-25, due 2022-04-15, known ransomware use
CWE: CWE-284
Published: 2021-09-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

citrix:sharefile_storagezones_controller

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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