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CVE-2021-21985CISA KEV

VMware vCenter Server Improper Input Validation Vulnerability

CISA lists this VMware vCenter Server vulnerability as known exploited. The vendor's advisory has the fixed versions.

CISA KEVVendor advisoryNVD

CISA catalog record

VMware vSphere Client contains an improper input validation vulnerability in the Virtual SAN Health Check plug-in, which is enabled by default in vCenter Server, which allows for remote code execution.

Product
vCenter Server
Added to KEV
3 Nov 2021
Federal remediation due
17 Nov 2021
Known ransomware use
Yes

What changed

First observed 14 Oct 2026

No field changes in the recorded history.

Cite this recorded revision to keep the same title, summary, facts and links when the page changes.

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ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 14 Oct 13:56 UTC · 254 of 255 readable · 253 fully read · documentation 0/409 current

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