CVE-2021-43883
HighPublished
Windows Installer Elevation of Privilege Vulnerability
- Published
- Dec 15, 2021
- Updated
- Aug 4, 2024
- Assigning CNA
- microsoft
- Evidence observed
- Aug 8, 2026
Primary CVSS
7.8/ 10High
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H12.1%
Moderate · next 30 days
- Percentile
- 96.1%
- Model date
- Oct 13, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Windows Installer Elevation of Privilege Vulnerability
Sources
- shakeitoffPoC
Windows MSI Installer LPE (CVE-2021-43883)
Responsible use
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