Actively exploited in the wild
Microsoft MSHTML Remote Code Execution Vulnerability
Microsoft - MSHTML · Listed in the CISA KEV since 2021-11-03. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2019-0541
HighCVSS 8.8KEVSummary
A remote code execution vulnerability exists in the way that the MSHTML engine improperly validates input. This affects Microsoft Office, Microsoft Office Word Viewer, Internet Explorer 9, 10, 11, Microsoft Excel Viewer, and Office 365 ProPlus.
Risk Assessment
An attacker could remotely execute arbitrary code in the context of the user, potentially leading to system compromise. However, user interaction is required, such as opening a malicious document or webpage.
Recommendation
Immediately install Microsoft security updates for all affected products. Also, avoid opening suspicious attachments and links.
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Original NVD description (English source)
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.