CASCACascade Atlas

Evidence dossier

CVE-2019-0541

CVE-2019-0541

76.6–92.8Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Jan 8, 2019
Updated
Oct 21, 2025
Evidence coverage
85%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS53.20%

2026-07-18 · v2026.06.15 · percentile 98.9%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
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CISA ADP Vulnrichment

CVEderivative copy
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CVE Program Container

microsoftoriginal assertion
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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.

CISA KEVoriginal assertion
observed_exploitation

Microsoft MSHTML Remote Code Execution Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.532020000000; percentile 0.988630000000

Applicability

Cited product scope

Trace impact →
MicrosoftInternet Explorer 10
[{"status": "affected", "version": "Windows Server 2012"}]unknown
MicrosoftInternet Explorer 11
[{"status": "affected", "version": "Windows 10 for 32-bit Systems"}, {"status": "affected", "version": "Windows 10 for x64-based Systems"}, {"status": "affected", "version": "Windows 10 Version 1607 for 32-bit Systems"}, {"status": "affected", "version": "Windows 10 Version 1607 for x64-based Systems"}, {"status": "affected", "version": "Windows 10 Version 1703 for 32-bit Systems"}, {"status": "affected", "version": "Windows 10 Version 1703 for x64-based Systems"}, {"status": "affected", "version": "Windows 10 Version 1709 for 32-bit Systems"}, {"status": "affected", "version": "Windows 10 Version 1709 for ARM64-based Systems"}, {"status": "affected", "version": "Windows 10 Version 1709 for x64-based Systems"}, {"status": "affected", "version": "Windows 10 Version 1803 for 32-bit Systems"}, {"status": "affected", "version": "Windows 10 Version 1803 for ARM64-based Systems"}, {"status": "affected", "version": "Windows 10 Version 1803 for x64-based Systems"}, {"status": "affected", "version": "Windows 10 Version 1809 for 32-bit Systems"}, {"status": "affected", "version": "Windows 10 Version 1809 for ARM64-based Systems"}, {"status": "affected", "version": "Windows 10 Version 1809 for x64-based Systems"}, {"status": "affected", "version": "Windows 7 for 32-bit Systems Service Pack 1"}, {"status": "affected", "version": "Windows 7 for x64-based Systems Service Pack 1"}, {"status": "affected", "version": "Windows 8.1 for 32-bit systems"}, {"status": "affected", "version": "Windows 8.1 for x64-based systems"}, {"status": "affected", "version": "Windows RT 8.1"}, {"status": "affected", "version": "Windows Server 2008 R2 for x64-based Systems Service Pack 1"}, {"status": "affected", "version": "Windows Server 2012 R2"}, {"status": "affected", "version": "Windows Server 2016"}, {"status": "affected", "version": "Windows Server 2019"}]unknown
MicrosoftInternet Explorer 9
[{"status": "affected", "version": "Windows Server 2008 for 32-bit Systems Service Pack 2"}, {"status": "affected", "version": "Windows Server 2008 for x64-based Systems Service Pack 2"}]unknown
MicrosoftMicrosoft Excel Viewer
[{"status": "affected", "version": "2007 Service Pack 3"}]unknown
MicrosoftMicrosoft Office
[{"status": "affected", "version": "2010 Service Pack 2 (32-bit editions)"}, {"status": "affected", "version": "2010 Service Pack 2 (64-bit editions)"}, {"status": "affected", "version": "2013 RT Service Pack 1"}, {"status": "affected", "version": "2013 Service Pack 1 (32-bit editions)"}, {"status": "affected", "version": "2013 Service Pack 1 (64-bit editions)"}, {"status": "affected", "version": "2016 (32-bit edition)"}, {"status": "affected", "version": "2016 (64-bit edition)"}, {"status": "affected", "version": "2019 for 32-bit editions"}, {"status": "affected", "version": "2019 for 64-bit editions"}]unknown
MicrosoftMicrosoft Office Word Viewer
[{"status": "affected", "version": "Microsoft Office Word Viewer"}]unknown
MicrosoftOffice
[{"status": "affected", "version": "365 ProPlus for 32-bit Systems"}, {"status": "affected", "version": "365 ProPlus for 64-bit Systems"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:microsoft:excel_viewer:2007:sp3:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:internet_explorer:10:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:internet_explorer:11:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:office:2010:sp2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:office:2013:sp1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:office:2013:sp1:*:*:rt:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:office:2016:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:office_365_proplus:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:office_word_viewer:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x86:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1703:-:*:*:*:*:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1703:-:*:*:*:*:*:x86:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:arm64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x86:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:arm64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x86:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*constrained

Assessments

CVSS by origin

8.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:M/Au:N/C:C/I:C/A:C
8.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.