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CVE-2019-0541

Microsoft MSHTML Remote Code Execution Vulnerability

  • High 8.8
  • Exploited: added to CISA KEV 3 Nov 2021
  • A public exploit reference is listed

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.

Key facts

Published
8 Jan 2019
Last changed
21 Oct 2025
Assigned by
microsoft
KEV added
3 Nov 2021
KEV fix due
3 May 2022
EPSS
53.202% likely to be exploited in the next 30 days, higher than 98.999% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 8.8CVSS 3.1, Highfrom CISA (ADP container)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What to do

  • Apply updates per vendor instructions.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
MicrosoftMicrosoft Office
  • 2010 Service Pack 2 (32-bit editions) (affected)
  • 2010 Service Pack 2 (64-bit editions) (affected)
  • 2013 RT Service Pack 1 (affected)
  • 2013 Service Pack 1 (32-bit editions) (affected)
  • 2013 Service Pack 1 (64-bit editions) (affected)
  • 2016 (32-bit edition) (affected)
  • 2016 (64-bit edition) (affected)
  • 2019 for 32-bit editions (affected)
  • 2019 for 64-bit editions (affected)
MicrosoftMicrosoft Office Word Viewer
  • Microsoft Office Word Viewer (affected)
MicrosoftInternet Explorer 9
  • Windows Server 2008 for 32-bit Systems Service Pack 2 (affected)
  • Windows Server 2008 for x64-based Systems Service Pack 2 (affected)
MicrosoftInternet Explorer 11
  • 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 (affected)
  • Windows 10 Version 1709 for 32-bit Systems (affected)
  • Windows 10 Version 1709 for ARM64-based Systems (affected)
  • Windows 10 Version 1709 for x64-based Systems (affected)
  • Windows 10 Version 1803 for 32-bit Systems (affected)
  • Windows 10 Version 1803 for ARM64-based Systems (affected)
  • Windows 10 Version 1803 for x64-based Systems (affected)
  • Windows 10 Version 1809 for 32-bit Systems (affected)
  • Windows 10 Version 1809 for ARM64-based Systems (affected)
  • Windows 10 Version 1809 for x64-based Systems (affected)
  • Windows 7 for 32-bit Systems Service Pack 1 (affected)
  • Windows 7 for x64-based Systems Service Pack 1 (affected)
  • Windows 8.1 for 32-bit systems (affected)
  • Windows 8.1 for x64-based systems (affected)
  • Windows RT 8.1 (affected)
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (affected)
  • Windows Server 2012 R2 (affected)
  • Windows Server 2016 (affected)
  • Windows Server 2019 (affected)
MicrosoftMicrosoft Excel Viewer
  • 2007 Service Pack 3 (affected)
MicrosoftInternet Explorer 10
  • Windows Server 2012 (affected)
MicrosoftOffice
  • 365 ProPlus for 32-bit Systems (affected)
  • 365 ProPlus for 64-bit Systems (affected)

Timeline

  1. 8 Jan 2019 Published
  2. 3 Nov 2021 CVE-2019-0541 added to CISA KEV
  3. 3 Nov 2021 Added to the CISA KEV catalogue

Weakness

References