CVE-2021-43890

Vulnerability details

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

Added to CISA KEV: 2021-12-15

Ransomware campaign use: Known

CISA due date: 2021-12-29

Defensive guidance from CISA

Apply updates per vendor instructions.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.