PULSEUnderground Intel

LIVE20signals / 24h

FEED

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CVE Watch—

CVE-2021-1647

Microsoft Defender Remote Code Execution Vulnerability

CVSS

—

No CVSS

EPSS

39.4%

p99

KEV

YES

Nov 3, 2021

Exploit Today

80

0-100

Published: — · Last modified: —

EPSS · 30d

39.4%EPSS · 30 days39.4%

2026-09-162026-10-14

KEV catalog record

Product

Microsoft / Defender

Vulnerability

Microsoft Defender Remote Code Execution Vulnerability

Added to KEV

Nov 3, 2021

Remediate by

Nov 17, 2021

Known ransomware use

No

Summary description

Microsoft Defender contains an unspecified vulnerability that allows for remote code execution.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2021-1647

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