VulnerabilityModified

CVE-2017-8578

HIGH 7.8EPSS 6.47%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (6.47%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Win32k 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, and 1703, and Windows Server 2016 allows an elevation of privilege vulnerability when it fails to properly handle objects in memory, aka "Win32k Elevation of Privilege Vulnerability". This CVE ID is unique from CVE-2017-8577, CVE-2017-8580, CVE-2017-8581, and CVE-2017-8467.

CVSS 3.0: 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS: 6.47% probability · 94th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-281
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 6.5% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

http://www.securityfocus.com/bid/99419Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038853Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8578Patch, Vendor Advisory
http://www.securityfocus.com/bid/99419Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038853Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8578Patch, Vendor Advisory

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