CVE Tools
Sign in

CVE-2021-22941

Published: Sep 23, 2021Updated: Nov 3, 2025 Sources: CVE List NVD BDUCWE-284
9.8CRITICAL
NVD MITRE
EPSS Score
53.6%
Top 1.1%
CISA KEV
Active Exploitation
Since Mar 25, 2022
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Nuclei · OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-284NVD-CWE-Other

Affected Products

citrix
commercial·USaka application delivery controller firmware, xenserver, netscaler gateway firmware
sharefile storagezones controllerSaaSSaaS Service
Cloud & SaaS / saas-application
Citrix Systems Inc.
commercial·USaka citrix gateway, netscaler gateway, citrix adc
ShareFileMixed
Cloud & SaaS
and 1 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Mar 25, 2022
Remediation due:Apr 15, 2022
Ransomware:Known ransomware use

Required action: Apply updates per vendor instructions.

Official Patch Available
Is your org exposed to CVE-2021-22941?We'll check your whole external perimeter for exposure — free. Check my exposure

References

https://support.citrix.com/article/CTX328123
support.citrix.com
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22941
cisa.gov
https://support.citrix.com/article/CTX328123/citrix-sharefile-storage-zones-controller-security-update
support.citrix.com
and 1 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2021-22941 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows