Microsoft XML
CVE-2019-0793 — MS XML Remote Code Execution Vulnerability
Executive Summary
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.
Overview
7.8
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
Temporal Score: 7.0
EPSS Score
0.17217
probability of exploitation in the next 30 days
0.96704 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
38 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 for 32-bit Systems | 4493475 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 for x64-based Systems | 4493475 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1607 for 32-bit Systems | 4493470 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1607 for x64-based Systems | 4493470 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1703 for 32-bit Systems | 4493474 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1703 for x64-based Systems | 4493474 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1709 for 32-bit Systems | 4493441 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1709 for ARM64-based Systems | 4493441 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1709 for x64-based Systems | 4493441 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1803 for 32-bit Systems | 4493464 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1803 for ARM64-based Systems | 4493464 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1803 for x64-based Systems | 4493464 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 4493509 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for ARM64-based Systems | 4493509 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for x64-based Systems | 4493509 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 7 for 32-bit Systems Service Pack 1 | 4493472 (Monthly Rollup) 4493448 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows 7 for x64-based Systems Service Pack 1 | 4493472 (Monthly Rollup) 4493448 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows 8.1 for 32-bit systems | 4493446 (Monthly Rollup) 4493467 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows 8.1 for x64-based systems | 4493446 (Monthly Rollup) 4493467 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows RT 8.1 | 4493446 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | 4493471 (Monthly Rollup) 4493458 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | 4493471 (Monthly Rollup) 4493458 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for Itanium-Based Systems Service Pack 2 | 4493471 (Monthly Rollup) 4493458 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for x64-based Systems Service Pack 2 | 4493471 (Monthly Rollup) 4493458 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | 4493471 (Monthly Rollup) 4493458 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | 4493472 (Monthly Rollup) 4493448 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | 4493472 (Monthly Rollup) 4493448 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | 4493472 (Monthly Rollup) 4493448 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 | 4493451 (Monthly Rollup) 4493450 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 (Server Core installation) | 4493451 (Monthly Rollup) 4493450 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 R2 | 4493446 (Monthly Rollup) 4493467 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 R2 (Server Core installation) | 4493446 (Monthly Rollup) 4493467 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2016 | 4493470 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2016 (Server Core installation) | 4493470 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 | 4493509 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 (Server Core installation) | 4493509 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server, version 1709 (Server Core Installation) | 4493441 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server, version 1803 (Server Core Installation) | 4493464 (Security Update) |
Critical | Remote Code Execution | Yes |
Patches
11 patches
| Article | Type | Restart |
|---|---|---|
4493475 |
Security Update | Yes |
4493470 |
Security Update | Yes |
4493474 |
Security Update | Yes |
4493441 |
Security Update | Yes |
4493464 |
Security Update | Yes |
4493509 |
Security Update | Yes |
4493472 (Monthly Rollup) 4493448 |
Monthly Rollup | Yes |
4493446 (Monthly Rollup) 4493467 |
Monthly Rollup | Yes |
4493446 |
Monthly Rollup | Yes |
4493471 (Monthly Rollup) 4493458 |
Monthly Rollup | Yes |
4493451 (Monthly Rollup) 4493450 |
Monthly Rollup | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
References
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