CVE-2019-1057: Microsoft Windows 10

High severity, CVSS 7.5. EPSS: 3.1% chance of exploitation in the next 30 days.

A remote code execution vulnerability exists when the Microsoft XML Core Services MSXML parser processes user input. An attacker who successfully exploited the vulnerability could run malicious code remotely to take control of the user’s system. To exploit the vulnerability, an attacker could host a specially crafted website designed to invoke MSXML through a web browser. However, an attacker would have no way to force a user to visit such a website. Instead, an attacker would typically have to convince a user to either click a link in an email message or instant message that would then take the user to the website. When Internet Explorer parses the XML content, an attacker could run malicious code remotely to take control of the user’s system. The update addresses the vulnerability by correcting how the MSXML parser processes user input.

Affected products

• Microsoft Windows 10: affected versions not specified; version 1607 only; version 1703 only; version 1709 only; version 1803 only; version 1809 only; …
• Microsoft Windows 7: affected versions not specified
• Microsoft Windows 8.1: affected versions not specified
• Microsoft Windows Rt 8.1: affected versions not specified
• Microsoft Windows Server 2008: affected versions not specified; version r2 only
• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: affected versions not specified; version 1803 only; version 1903 only
• Microsoft Windows Server 2019: affected versions not specified

Published 2019-08-14. Last modified 2026-06-17.