CVE-2019-1458
Microsoft Win32k Privilege Escalation Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply updates per vendor instructions.
CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2019-1458
Description
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'.
Severity
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation Context
as of October 14, 2026- CISA added CVE-2019-1458 to the KEV catalog 762 days after its CVE record was published.
- It is one of 391 Microsoft entries in the CISA KEV catalog, and one of 166 added in 2022.
- Its current EPSS score (74.4%) is higher than that of 60% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Microsoft Windows | 10 for 32-bit Systems 10 for x64-based Systems 10 Version 1607 for 32-bit Systems 10 Version 1607 for x64-based Systems 7 for 32-bit Systems Service Pack 1 7 for x64-based Systems Service Pack 1 8.1 for 32-bit systems 8.1 for x64-based systems RT 8.1 |
| Microsoft | Microsoft Windows Server | 2016 2016 (Core installation) 2008 for 32-bit Systems Service Pack 2 2008 for 32-bit Systems Service Pack 2 (Core installation) 2008 for Itanium-Based Systems Service Pack 2 2008 for x64-based Systems Service Pack 2 2008 for x64-based Systems Service Pack 2 (Core installation) 2008 R2 for Itanium-Based Systems Service Pack 1 2008 R2 for x64-based Systems Service Pack 1 2008 R2 for x64-based Systems Service Pack 1 (Core installation) 2012 2012 (Core installation) 2012 R2 2012 R2 (Core installation) |
References
3 Links- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1458
- http://packetstormsecurity.com/files/156651/Microsoft-Windows-WizardOpium-Local-Privilege-Escalation.html
- http://packetstormsecurity.com/files/159569/Microsoft-Windows-Uninitialized-Variable-Local-Privilege-Escalation.html
Record Details
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