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CVE-2021-22941

Citrix ShareFile Improper Access Control

9.8 CRITICALActively exploited (CISA KEV)Used in ransomwareEPSS 53.6%
  1. Published23 Sept 2021
  2. Added to CISA KEV25 Mar 2022
  3. Remediation due15 Apr 2022
Actively exploited (CISA KEV)

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

Added to KEV: 25 Mar 2022Federal remediation due: 15 Apr 2022Used in ransomware

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
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< 5.11.20

Remediation

Fixed in
Citrix Sharefile Storagezones Controller≥ 5.11.20

References

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Frequently asked

Is CVE-2021-22941 being actively exploited?

Yes. CVE-2021-22941 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 25 Mar 2022. It has been used in ransomware campaigns.

How severe is CVE-2021-22941?

CVE-2021-22941 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 53.6% probability of exploitation.

Which products are affected by CVE-2021-22941?

Affected products include Citrix Sharefile Storagezones Controller.

How do I fix CVE-2021-22941?

Upgrade affected software to a fixed version, for example Citrix Sharefile Storagezones Controller 5.11.20 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2021-22941 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.