VulnerabilityModified

CVE-2017-0109

HIGH 7.6EPSS 4.54%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (4.54%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Hyper-V in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2; Windows 7 SP1; Windows 8.1; Windows Server 2012 Gold and R2; Windows 10 Gold, 1511, and 1607; and Windows Server 2016 allows guest OS users to execute arbitrary code on the host OS via a crafted application, aka "Hyper-V Remote Code Execution Vulnerability." This vulnerability is different from that described in CVE-2017-0075.

CVSS 3.0: 7.6 HIGHCVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS: 4.54% probability · 92th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-20
Affected: microsoft/windows 10 · microsoft/windows 7 · microsoft/windows 8.1 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016 · microsoft/windows vista
Source: secure@microsoft.com

EPSS trend

EPSS moved from 5.7% on 21 September 2026 to 4.5% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

References

http://www.securityfocus.com/bid/96644Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037999
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0109Mitigation, Patch, Vendor Advisory
http://www.securityfocus.com/bid/96644Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037999
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0109Mitigation, Patch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.