CVE-2017-0263

CVE-2017-0263 is a high-severity (CVSS 7.8) vulnerability in Microsoft Win32k. CISA added it to the Known Exploited Vulnerabilities catalog on February 10, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by August 10, 2022. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.

The kernel-mode drivers 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, 1703, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

• http://www.securityfocus.com/bid/98258
• http://www.securitytracker.com/id/1038449
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0263
• https://www.exploit-db.com/exploits/44478/
• https://xiaodaozhi.com/exploit/117.html
• http://www.securityfocus.com/bid/98258
• http://www.securitytracker.com/id/1038449
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0263