CVE-2021-22941Citrix ShareFile Improper Access Control Vulnerability

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.

9.8 CRITICALEPSS 53.58%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 03:38 UTC

OverviewCVSS details

9.8CRITICALCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Sep 23, 2021
Assigner: hackerone

Affected

Citrix ShareFile storage zones controller

Versions: 5.11.20

Exploitation

Public exploit: None listed
CISA KEV: Listed · Mar 25, 2022
KEV due date: Apr 15, 2022
Ransomware use: Known
SSVC: Exploitation active · Automatable yes · Impact total

EPSS · FIRST, scored Nov 7

53.58%chance of exploitation in 30 days

Higher than 98.99% of CVEs

CVSS 3.1 · NVD

9.8Critical

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

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 2.0 · NVD

10.0High

AV:N/AC:L/Au:N/C:C/I:C/A:C

Attack vector: Network
Attack complexity: Low
Authentication: None
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
9.8	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0	HIGH	2.0NVD	AV:N/AC:L/Au:N/C:C/I:C/A:C

CISA required action

⚡ Known exploited · remediation due Apr 15, 2022

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Details

CVE ID: CVE-2021-22941
Status: Analyzed
Assigner (CNA): hackerone
Published: Sep 23, 2021
Last modified: 2026-06-17 03:38 UTC
Weaknesses: CWE-284 · Improper Access Control - Generic (CWE-284)

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 13:07 UTC.