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CVE-2017-0193: Windows Hyper-V lets attacker gain admin rights in guest OS

CVE-2017-0193 · published 9 years ago

Summary

The Hyper-V virtualization feature in Windows 7, 8.1, 10, Windows Server 2008 and Server 2012 may let a malicious user inside a virtual machine break out and obtain administrator privileges on the host system. This could allow the attacker to control the entire server or workstation and access sensitive data. Install the latest Microsoft security updates for the affected Windows versions, and disable Hyper-V if you do not need it.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
microsoft	windows_10	1511 1607 1703 `cpe:2.3:o:microsoft:windows_10::::::::`
microsoft	windows_7	All versions `cpe:2.3:o:microsoft:windows_7:-:sp1::::::`
microsoft	windows_8.1	rt `cpe:2.3:o:microsoft:windows_8.1::::::::`
microsoft	windows_server_2008	r2 `cpe:2.3:o:microsoft:windows_server_2008:-:sp2::::::`
microsoft	windows_server_2012	r2 `cpe:2.3:o:microsoft:windows_server_2012:-:::::::*`
microsoft	windows_server_2016	All versions `cpe:2.3:o:microsoft:windows_server_2016:-:::::::*`

Original advisory text

Windows Hyper-V in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to gain elevated privileges on a target guest operating system when Windows Hyper-V instruction emulation fails to properly enforce privilege levels, aka "Hypervisor Code Integrity Elevation of Privilege Vulnerability".

References

http://www.securityfocus.com/bid/98878 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1038670
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0193 Mitigation Patch Vendor Advisory

Fix within

Internet-facing 14 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit (estimated)
Gives an attacker full control (estimated)

Severity

7.8 High

Exploitation

1% chance of attack within 30 days

Type

CWE-755Improper Handling of Exceptional Conditions

Timeline

Published15 Jun 2017

Updated4 Nov 2026

First seen29 Sep 2026

Sources

CVE-2017-0193 · NVD

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