CVE-2021-1647 HIGH

CVE-2021-1647: Microsoft Defender Remote Code Execution Vulnerability

Vendor Microsoft
Product Microsoft System Center Endpoint Protection
KEV Status Known Exploited
Published January 12, 2021
Last update October 21, 2025
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

What the vulnerability does

01Description

Microsoft Defender Remote Code Execution Vulnerability

CISA mandated remediation

02CISA Required Action

Apply updates per vendor instructions.

Key dates

03Disclosure timeline

January 12, 2021 CVE published
October 21, 2025 Record updated