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CVE-2021-21588

MEDIUM
4.3
CVSS Score
Published: July 12, 2021 at 03:40 PM UTC
Updated: June 17, 2026 at 03:35 AM UTC
2 products affected across 1 vendorPowerflex Presentation ServerPowerFlex Manager

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%

Description

Dell EMC PowerFlex, v3.5.x contain a Cross-Site WebSocket Hijacking Vulnerability in the Presentation Server/WebUI. An unauthenticated attacker could potentially exploit this vulnerability by tricking the user into performing unwanted actions on the Presentation Server and perform which may lead to configuration changes.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Powerflex Presentation Server· Dell
95%
3.5 ≤ v < 3.6
Affected range stops below 3.6, so it looks safe — our inference, not a vendor statement
PowerFlex Manager· Dell
60%
3.5.x

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.dell.com/support/kbdoc/000189265

CVSS

4.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-345

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