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CVE record · CVE-2021-28454

Microsoft Excel Remote Code Execution Vulnerability

CVSS 7.8 HighEPSS 0.034 · 88th percentile

Published by the CVE Program (CNA: microsoft) at 13 Apr 2021, 19:33 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Microsoft Microsoft Office 2019
  • affected 19.0.0 to before https://aka.ms/OfficeSecurityReleases custom
Microsoft Microsoft Office Online Server
  • affected 16.0.1 to before publication custom
Microsoft Microsoft 365 Apps for Enterprise
  • affected 16.0.1 to before https://aka.ms/OfficeSecurityReleases custom
Microsoft Microsoft Excel 2016
  • affected 16.0.0.0 to before publication custom
Microsoft Microsoft Office 2016
  • affected 16.0.0 to before publication custom
Microsoft Microsoft Excel 2010 Service Pack 2
  • affected 13.0.0.0 to before publication custom
Microsoft Microsoft Excel 2013 Service Pack 1
  • affected 15.0.0.0 to before publication custom
Microsoft Microsoft Office 2010 Service Pack 2
  • affected 13.0.0.0 to before publication custom
Microsoft Microsoft Office 2013 Service Pack 1
  • affected 15.0.0 to before publication custom
Microsoft Microsoft Office Web Apps Server 2013 Service Pack 1
  • affected 15.0.1 to before publication custom
Identifiers
CVE-2021-28454
CNA
microsoft
Tags
Published
13 Apr 2021
Updated
3 Aug 2024

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.8 High 3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C CNA (microsoft)
  • CISA KEV Not listed.
  • EPSS 0.034, the 88th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 13 Apr 2021. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.