CVEs / CVE-2019-1458
CVE-2019-1458: Microsoft Win32k Privilege Escalation Vulnerability
- Known exploited in the CISA KEV catalog since 10 Jan 2022
- high 7.8 CVSS 3.1 (NVD)
- EPSS 74.4% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
A privilege escalation vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k EoP.
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'.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows | 10 for 32-bit Systems | — |
| Microsoft Windows | 10 for x64-based Systems | — |
| Microsoft Windows | 10 Version 1607 for 32-bit Systems | — |
| Microsoft Windows | 10 Version 1607 for x64-based Systems | — |
| Microsoft Windows | 7 for 32-bit Systems Service Pack 1 | — |
| Microsoft Windows | 7 for x64-based Systems Service Pack 1 | — |
| Microsoft Windows | 8.1 for 32-bit systems | — |
| Microsoft Windows | 8.1 for x64-based systems | — |
| Microsoft Windows | RT 8.1 | — |
| Microsoft Windows Server | 2016 | — |
| Microsoft Windows Server | 2016 (Core installation) | — |
| Microsoft Windows Server | 2008 for 32-bit Systems Service Pack 2 | — |
| Microsoft Windows Server | 2008 for 32-bit Systems Service Pack 2 (Core installation) | — |
| Microsoft Windows Server | 2008 for Itanium-Based Systems Service Pack 2 | — |
| Microsoft Windows Server | 2008 for x64-based Systems Service Pack 2 | — |
| Microsoft Windows Server | 2008 for x64-based Systems Service Pack 2 (Core installation) | — |
| Microsoft Windows Server | 2008 R2 for Itanium-Based Systems Service Pack 1 | — |
| Microsoft Windows Server | 2008 R2 for x64-based Systems Service Pack 1 | — |
| Microsoft Windows Server | 2008 R2 for x64-based Systems Service Pack 1 (Core installation) | — |
| Microsoft Windows Server | 2012 | — |
| Microsoft Windows Server | 2012 (Core installation) | — |
| Microsoft Windows Server | 2012 R2 | — |
| Microsoft Windows Server | 2012 R2 (Core installation) | — |
Exploitation
| In CISA KEV since | 10 Jan 2022 |
|---|---|
| Due date for US federal agencies | 10 Jul 2022 |
| Used in ransomware campaigns | Known |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|
References
- CVE-2019-1458 on NVD
- CVE-2019-1458 in the CISA KEV catalog
- http://packetstormsecurity.com/files/156651/Microsoft-Windows-WizardOpium-Local-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/159569/Microsoft-Windows-Uninitialized-Variable-Local-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1458 Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1458 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.