CVE-2021-22891
CRITICAL
9.8
CVSS Score
Published: May 27, 2021 at 11:15 AM UTC
Updated: June 17, 2026 at 03:37 AM UTC
1 product affected across 1 vendorSharefile Storagezones Controller
Using Citrix ShareFile Storage Zones Controller by N/A?
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Severity
CRITICAL9.8
Exploit prediction
EPSS 1%
Description
A missing authorization vulnerability exists in Citrix ShareFile Storage Zones Controller before 5.7.3, 5.8.3, 5.9.3, 5.10.1 and 5.11.18 may allow unauthenticated remote compromise of the Storage Zones Controller.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
5.10 ≤ v < 5.10.15.11 ≤ v < 5.11.185.7 ≤ v < 5.7.35.8 ≤ v ≤ 5.8.35.9 ≤ v < 5.9.35.10.15.11.185.7.35.8.35.9.3
Affected range stops below 5.10.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.11.18, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.7.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.9.3, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://support.citrix.com/article/CTX310780CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-862
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