Live › vulnerability › CVE-2021-1647
Go to dashboardMicrosoft Defender (the antivirus engine) has a remote code execution flaw that CISA lists as actively exploited. An attacker who reaches the vulnerable component can run code on the machine.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Microsoft Defender | vendor | – | – |
Check the Microsoft Defender Antimalware Platform version under Windows Security > Virus & threat protection > Protection updates, or run Get-MpComputerStatus in PowerShell and read AMProductVersion.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Microsoft Defender contains an unspecified vulnerability that allows for remote code execution.
CISA required action: Apply updates per vendor instructions.
This page as .md · .json · in your agent: get_signal("CVE-2021-1647")
CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.