CISA KEV catalog
Confirmed active exploitation.
Listed in CISA's catalog of Known Exploited Vulnerabilities: attackers are using it in real attacks. Patch it with priority.
- Name
- Microsoft Win32k Privilege Escalation Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2003 SP2 and R2 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."
Affected products
microsoft: windows 7; microsoft: windows 8; microsoft: windows 8.1; microsoft: windows rt; microsoft: windows rt 8.1; microsoft: windows server 2003; microsoft: windows server 2008; microsoft: windows server 2012; microsoft: windows vista
References7
- docs.microsoft.com/en-us/security-updates/securitybulletins/201… PatchVendor Advisory
- docs.microsoft.com/en-us/security-updates/securitybulletins/201… PatchVendor Advisory
- www.securityfocus.com/bid/75025 Broken LinkThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1032525 Broken LinkThird Party AdvisoryVDB Entry
- www.securityfocus.com/bid/75025 Broken LinkThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1032525 Broken LinkThird Party AdvisoryVDB Entry
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=… US Government Resource
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 15% percentile: 97 · as of 2 November 2026
- CWE
- CWE-119CWE-416