How severe is CVE-2021-22941?

CVE-2021-22941 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-22941 being actively exploited?

Yes. CVE-2021-22941 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-25, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2021-22941?

CVE-2021-22941 affects Citrix Sharefile Storagezones Controller. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22941?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2021-22941 have an EU (EUVD) identifier?

Yes. CVE-2021-22941 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-10070. It is also flagged as exploited in the EUVD (since 2022-03-25).

When was CVE-2021-22941 published?

CVE-2021-22941 was published on 2021-09-23 and last updated on 2026-06-17.

CVE-2021-22941

CVE-2021-22941 is a critical-severity vulnerability in Citrix Sharefile Storagezones Controller with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-03-25). The underlying weakness is classified as CWE-284.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 54% (99th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-03-25)
EU (EUVD) id: EUVD-2021-10070
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-03-25)
Weakness: CWE-284
Affected product: Citrix Sharefile Storagezones Controller
Published: 2021-09-23
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-22941?: CVE-2021-22941 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-22941 being actively exploited?: Yes. CVE-2021-22941 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-25, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2021-22941?: CVE-2021-22941 affects Citrix Sharefile Storagezones Controller. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22941?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2021-22941 have an EU (EUVD) identifier?: Yes. CVE-2021-22941 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-10070. It is also flagged as exploited in the EUVD (since 2022-03-25).
When was CVE-2021-22941 published?: CVE-2021-22941 was published on 2021-09-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:citrix:sharefile_storagezones_controller:*:*:*:*:*:*:*:*

More vulnerabilities in Citrix Sharefile Storagezones Controller

CVE-2021-22891 — Critical (CVSS 9.8): A missing authorization vulnerability exists in Citrix ShareFile Storage Zones Controller before 5.7.3, 5.8.3, 5.9.3,…
CVE-2021-22932 — High (CVSS 7.5): An issue has been identified in the CTX269106 mitigation tool for Citrix ShareFile storage zones controller which…
CVE-2020-8983 — High (CVSS 7.5): An arbitrary file write issue exists in all versions of Citrix ShareFile StorageZones (aka storage zones) Controller,…
CVE-2020-8982 — High (CVSS 7.5): An unauthenticated arbitrary file read issue exists in all versions of Citrix ShareFile StorageZones (aka storage…
CVE-2020-7473 — High (CVSS 7.5): In certain situations, all versions of Citrix ShareFile StorageZones (aka storage zones) Controller, including the most…
CVE-2018-16969 — Medium (CVSS 4.3): Citrix ShareFile StorageZones Controller before 5.4.2 has Information Exposure Through an Error Message.

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