OnlyPatch
Microsoft Windows

CVE-2019-0722 — Windows Hyper-V Remote Code Execution Vulnerability

Critical CVSS 8.8 EPSS 0.04716 2019-06 archive

Executive Summary

A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate input from an authenticated user on a guest operating system. To exploit the vulnerability, an attacker could run a specially crafted application on a guest operating system that could cause the Hyper-V host operating system to execute arbitrary code. An attacker who successfully exploited the vulnerability could execute arbitrary code on the host operating system. The security update addresses the vulnerability by correcting how Hyper-V validates guest operating system user input.

Overview

8.8
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Remote Code Execution
Released Jun 11 2019
Last Updated Jun 11 2019
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.04716 — 0.9088 percentile
NVD CVSS 8.8 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.9

EPSS Score

0.04716
probability of exploitation in the next 30 days
0.9088 percentile - updated 2026-07-25
View on FIRST.org

Affected Products

18 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for x64-based Systems 4503291 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1607 for x64-based Systems 4503267 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1703 for x64-based Systems 4503279 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1709 for ARM64-based Systems 4503284 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1709 for x64-based Systems 4503284 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1803 for ARM64-based Systems 4503286 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1803 for x64-based Systems 4503286 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1809 for ARM64-based Systems 4503327 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1809 for x64-based Systems 4503327 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1903 for ARM64-based Systems 4503293 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1903 for x64-based Systems 4503293 (Security Update) Critical Remote Code Execution No
Windows 7 for x64-based Systems Service Pack 1 4503292 (Monthly Rollup) 4503269 (Security Only) Critical Remote Code Execution 4499164 Base: 8.8 Temporal: 7.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows 8.1 for x64-based systems 4503276 (Monthly Rollup) 4503290 (Security Only) Critical Remote Code Execution 4499151 Base: 8.8 Temporal: 7.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows RT 8.1 4503276 (Monthly Rollup) Critical Remote Code Execution Yes
Windows Server 2008 for Itanium-Based Systems Service Pack 2 4503273 (Monthly Rollup) 4503287 (Security Only) Critical Remote Code Execution 4499149 Base: 8.8 Temporal: 7.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2008 for x64-based Systems Service Pack 2 4503273 (Monthly Rollup) 4503287 (Security Only) Critical Remote Code Execution 4499149 Base: 8.8 Temporal: 7.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 4503273 (Monthly Rollup) 4503287 (Security Only) Critical Remote Code Execution 4499149 Base: 8.8 Temporal: 7.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4503292 (Monthly Rollup) 4503269 (Security Only) Critical Remote Code Execution 4499164 Base: 8.8 Temporal: 7.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 4503292 (Monthly Rollup) 4503269 (Security Only) Critical Remote Code Execution 4499164 Base: 8.8 Temporal: 7.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4503292 (Monthly Rollup) 4503269 (Security Only) Critical Remote Code Execution 4499164 Base: 8.8 Temporal: 7.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 4503285 (Monthly Rollup) 4503263 (Security Only) Critical Remote Code Execution 4499171 Base: 8.8 Temporal: 7.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 (Server Core installation) 4503285 (Monthly Rollup) 4503263 (Security Only) Critical Remote Code Execution 4499171 Base: 8.8 Temporal: 7.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 4503276 (Monthly Rollup) 4503290 (Security Only) Critical Remote Code Execution 4499151 Base: 8.8 Temporal: 7.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 (Server Core installation) 4503276 (Monthly Rollup) 4503290 (Security Only) Critical Remote Code Execution 4499151 Base: 8.8 Temporal: 7.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2016 4503267 (Security Update) Critical Remote Code Execution Yes
Windows Server 2016 (Server Core installation) 4503267 (Security Update) Critical Remote Code Execution Yes
Windows Server 2019 4503327 (Security Update) Critical Remote Code Execution Yes
Windows Server 2019 (Server Core installation) 4503327 (Security Update) Critical Remote Code Execution Yes
Windows Server, version 1803 (Server Core Installation) 4503286 (Security Update) Critical Remote Code Execution Yes
Windows Server, version 1903 (Server Core installation) 4503293 (Security Update) Critical Remote Code Execution No

Patches

8 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
4503276 Monthly Rollup Yes

Known Exploits

Acknowledgments

Joe Bialek ( @JosephBialek

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