CVE-2021-43905

Microsoft Office app Remote Code Execution Vulnerability

Score

CVSS 3.1 9.6 Critical

Status

Analyzed - secure@microsoft.com

Published

2021-12-15

Last modified

2026-05-28

Affected products

• 365 Copilot (Microsoft)
• Office (Microsoft)

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43905