An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'.
https://googleprojectzero.github.io/0days-in-the-wild//0day-RCAs/2019/CVE-2019-1458.html
https://www.tenable.com/blog/contileaks-chats-reveal-over-30-vulnerabilities-used-by-conti-ransomware-affiliates
https://www.tenable.com/blog/cve-2020-15999-cve-2020-17087-google-chrome-microsoft-windows-kernel-zero-day-vulnerabilities-exploited-in-wild-along-with-cve-2020-16009
https://www.tenable.com/blog/microsofts-december-2019-patch-tuesday-includes-fix-for-zero-day-exploited-in-the-wild-cve-0
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1458
http://packetstormsecurity.com/files/159569/Microsoft-Windows-Uninitialized-Variable-Local-Privilege-Escalation.html
http://packetstormsecurity.com/files/156651/Microsoft-Windows-WizardOpium-Local-Privilege-Escalation.html
Source: Mitre, NVD
Published: 2019-12-10
Updated: 2025-04-08
Known Exploited Vulnerability (KEV)
Base Score: 7.2
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
Severity: High
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.92823