Microsoft Win32k Privilege Escalation Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-05-25
• EPSS: 15% chance of exploitation in the next 30 days (higher than 97% of CVEs)

[ Description ]Official 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."

CISA: Win32k.sys in the kernel-mode drivers in Microsoft Windows allows local users to gain privileges or cause denial-of-service (DoS).

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 15 Jun 2022): Apply updates per vendor instructions.

• Patch on docs.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• www.securityfocus.com/bid/75025Broken LinkThird Party AdvisoryVDB Entry
• www.securitytracker.com/id/1032525Broken LinkThird Party AdvisoryVDB Entry
• docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-061PatchVendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource