VMware vCenter Server 6.4/6.5/7.0 SAN Health Check improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as critical has been found in VMware vCenter Server 6.4/6.5/7.0 (Server Management Software). This affects an unknown code of the component SAN Health Check/Site Recovery/Lifecycle Manager/Cloud Director Availability. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 05/26/2021 as VMSA-2021-0010/KB83829. It is possible to read the advisory at vmware.com. This vulnerability is uniquely identified as CVE-2021-21986. The technical details are unknown and an exploit is not publicly available.

Applying the patch 6.5 U3p/6.7 U3n/7.0 U2b is able to eliminate this problem.






  • commercial

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍


Class: Improper authentication
CWE: CWE-287
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 6.5 U3p/6.7 U3n/7.0 U2b


01/04/2021 🔍
05/26/2021 +141 days 🔍
05/26/2021 +0 days 🔍
05/29/2021 +3 days 🔍


Vendor: vmware.com

Advisory: VMSA-2021-0010/KB83829
Status: Confirmed

CVE: CVE-2021-21986 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20060413


Created: 05/26/2021 07:06 PM
Updated: 05/29/2021 02:45 PM
Changes: 05/26/2021 07:06 PM (40), 05/29/2021 02:45 PM (5)
Complete: 🔍


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