What is CVE-2021-22941?

CVE-2021-22941 is a critical-severity vulnerability in Citrix Sharefile_storagezones_controller, classified under Improper Access Control. CVSS score: 9.8/10. Published 2021-09-23.

How severe is CVE-2021-22941?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-22941 known to be exploited?

Yes. CVE-2021-22941 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating it is being actively exploited. 21 public proof-of-concept repositories are indexed.

Vulnerability in Citrix Sharefile_storagezones_controller

CVE-2021-22941

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.

EPSS: 0.536 (98.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Citrix Sharefile_storagezones_controller
N/a Citrix Sharefile Storage Zones Controller — versions 5.11.20

Weakness classification (CWE)

CWE-284 — Improper Access Control

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-03-25. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-04-15.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

support@hackerone.com (x_refsource_MISC, Broken Link, Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2021-22941?: CVE-2021-22941 is a critical-severity vulnerability in Citrix Sharefile_storagezones_controller, classified under Improper Access Control. CVSS score: 9.8/10. Published 2021-09-23.
How severe is CVE-2021-22941?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-22941 known to be exploited?: Yes. CVE-2021-22941 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating it is being actively exploited. 21 public proof-of-concept repositories are indexed.