Vulnerabilities CVE-2021-43890

CVE-2021-43890

High

Open

KEV

TLP:CLEAR

Windows AppX Installer Spoofing Vulnerability

NVD CVE.org

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Description

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

Details

CVSS Score: 7.1
EPSS Score ⓘ: 10.30%

95.3th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Confidence: 100%
Published: Dec 15, 2021
Last Modified: Aug 6, 2026
CISA KEV
Date Added: Dec 15, 2021
Patch Due: Dec 29, 2021
Required Action: Apply updates per vendor instructions.

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