CVE-2021-43890—Microsoft Windows AppX Installer Spoofing Vulnerability

PUBLISHEDvulnerability record

2021-12-15 · last modified June 21, 2025

Metadata

CVE ID:: CVE-2021-43890
Project:: Microsoft
Product:: Windows
Date Added:: 2021-12-15
Due Date:: 2021-12-29
Last Updated:: June 21, 2025

Vulnerability Name

Microsoft Windows AppX Installer Spoofing Vulnerability

Description

Microsoft Windows AppX Installer contains a spoofing vulnerability which has a high impacts to confidentiality, integrity, and availability.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:: KNOWN

Action

Apply updates per vendor instructions.

Additional Notes

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