Microsoft Windows
CVE-2019-0948 — Windows Event Viewer Information Disclosure Vulnerability
Executive Summary
An information disclosure vulnerability exists in the Windows Event Viewer (eventvwr.msc) when it improperly parses XML input containing a reference to an external entity. An attacker who successfully exploited this vulnerability could read arbitrary files via an XML external entity (XXE) declaration. To exploit the vulnerability, an attacker could create a file containing specially crafted XML content and convince an authenticated user to import the file. The update addresses the vulnerability by modifying the way that the Event Viewer parses XML input.
Overview
4.7
CVSS MEDIUM
Moderate
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Local
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
Temporal Score: 4.2
EPSS Score
0.12672
probability of exploitation in the next 30 days
0.95746 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
41 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 for 32-bit Systems | 4503291 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 for x64-based Systems | 4503291 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1607 for 32-bit Systems | 4503267 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1607 for x64-based Systems | 4503267 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1703 for 32-bit Systems | 4503279 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1703 for x64-based Systems | 4503279 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1709 for 32-bit Systems | 4503284 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1709 for ARM64-based Systems | 4503284 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1709 for x64-based Systems | 4503284 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1803 for 32-bit Systems | 4503286 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1803 for ARM64-based Systems | 4503286 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1803 for x64-based Systems | 4503286 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 4503327 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1809 for ARM64-based Systems | 4503327 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1809 for x64-based Systems | 4503327 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1903 for 32-bit Systems | 4503293 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1903 for ARM64-based Systems | 4503293 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows 10 Version 1903 for x64-based Systems | 4503293 (Security Update) |
Moderate | Information Disclosure | No |
| Windows 7 for 32-bit Systems Service Pack 1 | 4503292 (Monthly Rollup) 4503269 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows 7 for x64-based Systems Service Pack 1 | 4503292 (Monthly Rollup) 4503269 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows 8.1 for 32-bit systems | 4503276 (Monthly Rollup) 4503290 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows 8.1 for x64-based systems | 4503276 (Monthly Rollup) 4503290 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows RT 8.1 | 4503276 (Monthly Rollup) |
Moderate | Information Disclosure | Yes |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | 4503273 (Monthly Rollup) 4503287 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | 4503273 (Monthly Rollup) 4503287 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows Server 2008 for Itanium-Based Systems Service Pack 2 | 4503273 (Monthly Rollup) 4503287 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows Server 2008 for x64-based Systems Service Pack 2 | 4503273 (Monthly Rollup) 4503287 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | 4503273 (Monthly Rollup) 4503287 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | 4503292 (Monthly Rollup) 4503269 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | 4503292 (Monthly Rollup) 4503269 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | 4503292 (Monthly Rollup) 4503269 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows Server 2012 | 4503285 (Monthly Rollup) 4503263 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows Server 2012 (Server Core installation) | 4503285 (Monthly Rollup) 4503263 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows Server 2012 R2 | 4503276 (Monthly Rollup) 4503290 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows Server 2012 R2 (Server Core installation) | 4503276 (Monthly Rollup) 4503290 (Security Only) |
Moderate | Information Disclosure | Yes |
| Windows Server 2016 | 4503267 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows Server 2016 (Server Core installation) | 4503267 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows Server 2019 | 4503327 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows Server 2019 (Server Core installation) | 4503327 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows Server, version 1803 (Server Core Installation) | 4503286 (Security Update) |
Moderate | Information Disclosure | Yes |
| Windows Server, version 1903 (Server Core installation) | 4503293 (Security Update) |
Moderate | Information Disclosure | No |
Patches
12 patches
| Article | Type | Restart |
|---|---|---|
4503291 |
Security Update | Yes |
4503267 |
Security Update | Yes |
4503279 |
Security Update | Yes |
4503284 |
Security Update | Yes |
4503286 |
Security Update | Yes |
4503327 |
Security Update | Yes |
4503293 |
Security Update | Yes |
4503292 (Monthly Rollup) 4503269 |
Monthly Rollup | Yes |
4503276 (Monthly Rollup) 4503290 |
Monthly Rollup | Yes |
4503276 |
Monthly Rollup | Yes |
4503273 (Monthly Rollup) 4503287 |
Monthly Rollup | Yes |
4503285 (Monthly Rollup) 4503263 |
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
Eran Vaknin , Alon Boxiner, Oded Vanunu, @hyp3rlinx ) of ApparitionSec, Trend Micro's Zero Day Initiative
References
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