CVE-2021-27054

Microsoft Excel Remote Code Execution Vulnerability

Score

CVSS 3.1 7.8 High

Status

Modified - secure@microsoft.com

Published

2021-03-11

Last modified

2026-08-19

Affected products

• 365 Apps (Microsoft)
• Excel (Microsoft)
• Excel 2013 (Microsoft)
• Excel 2016 (Microsoft)
• Office (Microsoft)
• Office 2013 (Microsoft)
• Office 2016 (Microsoft)
• Office 2019 (Microsoft)
• Office Online Server (Microsoft)
• Office Web Apps (Microsoft)
• Office Web Apps Server 2013 (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27054
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27054
• https://www.zerodayinitiative.com/advisories/ZDI-21-507/