Win32k Elevation of Privilege Vulnerability
CVE-2018-8453 is fixed in 35 products on 1 platform, first by KB4462917, released October 9, 2018. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on January 21, 2022, with known ransomware use. Patch Radar priority: Patch now.
<p>An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.</p> <p>To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system.</p> <p>The update addresses this vulnerability by correcting how Win32k handles objects in memory.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows 10 Version 1607 for 32-bit Systems | 14393.2551 | KB4462917 | Oct 9, 2018 |
| Windows 10 Version 1607 for x64-based Systems | 14393.2551 | KB4462917 | Oct 9, 2018 |
| Windows 10 Version 1703 for 32-bit Systems | 15063.1387 | KB4462937 | Oct 9, 2018 |
| Windows 10 Version 1703 for x64-based Systems | 15063.1387 | KB4462937 | Oct 9, 2018 |
| Windows 10 Version 1709 for 32-bit Systems | 16299.726 | KB4462918 | Oct 9, 2018 |
| Windows 10 Version 1709 for x64-based Systems | 16299.726 | KB4462918 | Oct 9, 2018 |
| Windows 10 Version 1803 for 32-bit Systems | 17134.345 | KB4462919 | Oct 9, 2018 |
| Windows 10 Version 1803 for x64-based Systems | 17134.345 | KB4462919 | Oct 9, 2018 |
| Windows 10 Version 1809 for 32-bit Systems | 17763.55 | KB4464330 | Oct 9, 2018 |
| Windows 10 Version 1809 for x64-based Systems | 17763.55 | KB4464330 | Oct 9, 2018 |
| Windows 10 for 32-bit Systems | 10240.18005 | KB4462922 | Oct 9, 2018 |
| Windows 10 for x64-based Systems | 10240.18005 | KB4462922 | Oct 9, 2018 |
| Windows 7 for 32-bit Systems Service Pack 1 | KB4462915 | Oct 9, 2018 | |
| Windows 7 for 32-bit Systems Service Pack 1 | KB4462923 | Oct 9, 2018 | |
| Windows 7 for x64-based Systems Service Pack 1 | KB4462915 | Oct 9, 2018 | |
| Windows 7 for x64-based Systems Service Pack 1 | KB4462923 | Oct 9, 2018 | |
| Windows 8.1 for 32-bit systems | KB4462941 | Oct 9, 2018 | |
| Windows 8.1 for 32-bit systems | KB4462926 | Oct 9, 2018 | |
| Windows 8.1 for x64-based systems | KB4462941 | Oct 9, 2018 | |
| Windows 8.1 for x64-based systems | KB4462926 | Oct 9, 2018 | |
| Windows RT 8.1 | KB4462926 | Oct 9, 2018 | |
| Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | KB4462915 | Oct 9, 2018 | |
| Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | KB4462923 | Oct 9, 2018 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4462915 | Oct 9, 2018 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4462923 | Oct 9, 2018 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4462915 | Oct 9, 2018 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4462923 | Oct 9, 2018 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4463097 | Oct 9, 2018 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4463104 | Oct 9, 2018 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | KB4463097 | Oct 9, 2018 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | KB4463104 | Oct 9, 2018 | |
| Windows Server 2008 for Itanium-Based Systems Service Pack 2 | KB4463097 | Oct 9, 2018 | |
| Windows Server 2008 for Itanium-Based Systems Service Pack 2 | KB4463104 | Oct 9, 2018 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB4463097 | Oct 9, 2018 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB4463104 | Oct 9, 2018 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | KB4463097 | Oct 9, 2018 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | KB4463104 | Oct 9, 2018 | |
| Windows Server 2012 | KB4462931 | Oct 9, 2018 | |
| Windows Server 2012 | KB4462929 | Oct 9, 2018 | |
| Windows Server 2012 (Server Core installation) | KB4462931 | Oct 9, 2018 | |
| Windows Server 2012 (Server Core installation) | KB4462929 | Oct 9, 2018 | |
| Windows Server 2012 R2 | KB4462941 | Oct 9, 2018 | |
| Windows Server 2012 R2 | KB4462926 | Oct 9, 2018 | |
| Windows Server 2012 R2 (Server Core installation) | KB4462941 | Oct 9, 2018 | |
| Windows Server 2012 R2 (Server Core installation) | KB4462926 | Oct 9, 2018 | |
| Windows Server 2016 | 14393.2551 | KB4462917 | Oct 9, 2018 |
| Windows Server 2016 (Server Core installation) | 14393.2551 | KB4462917 | Oct 9, 2018 |
| Windows Server 2019 | 17763.55 | KB4464330 | Oct 9, 2018 |
| Windows Server 2019 (Server Core installation) | 17763.55 | KB4464330 | Oct 9, 2018 |
| Windows Server, version 1709 (Server Core Installation) | 16299.726 | KB4462918 | Oct 9, 2018 |
| Windows Server, version 1803 (Server Core Installation) | 17134.345 | KB4462919 | Oct 9, 2018 |
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