Known exploited (CISA KEV) · added 2021-11-03 Exploited per ENISA since 2021-11-03
EPSS
EPSS 53.20 % · percentile 99 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
microsoft
NVD status
Analyzed
Description
A remote code execution vulnerability exists in the way that the MSHTML engine inproperly validates input, aka "MSHTML Engine Remote Code Execution Vulnerability." This affects Microsoft Office, Microsoft Office Word Viewer, Internet Explorer 9, Internet Explorer 11, Microsoft Excel Viewer, Internet Explorer 10, Office 365 ProPlus.
affected Windows 10 for 32-bit Systems ; affected Windows 10 for x64-based Systems ; affected Windows 10 Version 1607 for 32-bit Systems ; affected Windows 10 Version 1607 for x64-based Systems ; affected Windows 10 Version 1703 for 32-bit Systems ; affected Windows 10 Version 1703 for x64-based Systems