VulnerabilityModified

CVE-2017-8699

HIGH 7.0EPSS 21.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 21.3%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

Windows Shell in Microsoft Windows 7 SP1, Windows Server 2008 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to run arbitrary code in the context of the current user, due to the way that Windows Shell validates file copy destinations, aka "Windows Shell Remote Code Execution Vulnerability".

CVSS 3.0: 7.0 HIGHCVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS: 21.30% probability · 98th 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 rt 8.1 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016
Source: secure@microsoft.com

EPSS trend

EPSS moved from 20.0% on 21 September 2026 to 21.3% 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/100783Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039331Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8699Patch, Vendor Advisory
http://www.securityfocus.com/bid/100783Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039331Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8699Patch, Vendor Advisory

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