Important CVSS 5.8 EPSS 0.05002 2019-08 archive

Executive Summary

A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server fails to properly validate input from a privileged user on a guest operating system. An attacker who successfully exploited the vulnerability could cause the host server to crash. To exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application that causes a host machine to crash. The update addresses the vulnerability by modifying how virtual machines access the Hyper-V Network Switch.

Overview

5.8
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Denial of Service
Released Aug 13 2019
Last Updated Aug 13 2019
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.05002 — 0.91125 percentile

CVSS Vector

ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
High
USER INTERACTION
None
SCOPE
Changed
Temporal Score: 5.2

EPSS Score

0.05002
probability of exploitation in the next 30 days
0.91125 percentile - updated 2026-06-20
View on FIRST.org

Affected Products

23 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for x64-based Systems 4512497 (Security Update) Important Denial of Service Yes
Windows 10 Version 1607 for x64-based Systems 4512517 (Security Update) Important Denial of Service Yes
Windows 10 Version 1703 for x64-based Systems 4512507 (Security Update) Important Denial of Service Yes
Windows 10 Version 1709 for x64-based Systems 4512516 (Security Update) Important Denial of Service Yes
Windows 10 Version 1803 for x64-based Systems 4512501 (Security Update) Important Denial of Service Yes
Windows 10 Version 1809 for x64-based Systems 4511553 (Security Update) Important Denial of Service Yes
Windows 10 Version 1903 for x64-based Systems 4512508 (Security Update) Important Denial of Service Yes
Windows 7 for x64-based Systems Service Pack 1 4512506 (Monthly Rollup) 4512486 (Security Only) Important Denial of Service Yes
Windows 8.1 for x64-based systems 4512488 (Monthly Rollup) 4512489 (Security Only) Important Denial of Service Yes
Windows Server 2008 for x64-based Systems Service Pack 2 4512476 (Monthly Rollup) 4512491 (Security Only) Important Denial of Service Yes
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 4512476 (Monthly Rollup) 4512491 (Security Only) Important Denial of Service Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 4512506 (Monthly Rollup) 4512486 (Security Only) Important Denial of Service Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4512506 (Monthly Rollup) 4512486 (Security Only) Important Denial of Service Yes
Windows Server 2012 4512518 (Monthly Rollup) 4512482 (Security Only) Important Denial of Service Yes
Windows Server 2012 (Server Core installation) 4512518 (Monthly Rollup) 4512482 (Security Only) Important Denial of Service Yes
Windows Server 2012 R2 4512488 (Monthly Rollup) 4512489 (Security Only) Important Denial of Service Yes
Windows Server 2012 R2 (Server Core installation) 4512488 (Monthly Rollup) 4512489 (Security Only) Important Denial of Service Yes
Windows Server 2016 4512517 (Security Update) Important Denial of Service Yes
Windows Server 2016 (Server Core installation) 4512517 (Security Update) Important Denial of Service Yes
Windows Server 2019 4511553 (Security Update) Important Denial of Service Yes
Windows Server 2019 (Server Core installation) 4511553 (Security Update) Important Denial of Service Yes
Windows Server, version 1803 (Server Core Installation) 4512501 (Security Update) Important Denial of Service Yes
Windows Server, version 1903 (Server Core installation) 4512508 (Security Update) Important Denial of Service Yes

Patches

11 patches
Article Type Restart
4512497 Security Update Yes
4512517 Security Update Yes
4512507 Security Update Yes
4512516 Security Update Yes
4512501 Security Update Yes
4511553 Security Update Yes
4512508 Security Update Yes
4512506 (Monthly Rollup) 4512486 Monthly Rollup Yes
4512488 (Monthly Rollup) 4512489 Monthly Rollup Yes
4512476 (Monthly Rollup) 4512491 Monthly Rollup Yes
4512518 (Monthly Rollup) 4512482 Monthly Rollup Yes

Known Exploits

Acknowledgments

Microsoft has not published researcher acknowledgments for this CVE, or they are not yet reflected in our data source. Check the MSRC advisory directly for the most current credit information.