Windows Kernel Information Disclosure in CPU Memory Access
CVE-2020-0955 is fixed in 41 products on 1 platform, first by KB4550929, released April 14, 2020. It is not reported as exploited. Patch Radar priority: Routine.
<p>An information disclosure vulnerability exists when certain central processing units (CPU) speculatively access memory. An attacker who successfully exploited the vulnerability could read privileged data across trust boundaries.</p> <p>To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The vulnerability would not allow an attacker to elevate user rights directly, but it could be used to obtain information that could be used to try to compromise the affected system further.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows 10 Version 1607 for 32-bit Systems | 14393.3630 | KB4550929 | Apr 14, 2020 |
| Windows 10 Version 1607 for x64-based Systems | 14393.3630 | KB4550929 | Apr 14, 2020 |
| Windows 10 Version 1709 for 32-bit Systems | 16299.1806 | KB4550927 | Apr 14, 2020 |
| Windows 10 Version 1709 for ARM64-based Systems | 16299.1806 | KB4550927 | Apr 14, 2020 |
| Windows 10 Version 1709 for x64-based Systems | 16299.1806 | KB4550927 | Apr 14, 2020 |
| Windows 10 Version 1803 for 32-bit Systems | 17134.1425 | KB4550922 | Apr 14, 2020 |
| Windows 10 Version 1803 for ARM64-based Systems | 17134.1425 | KB4550922 | Apr 14, 2020 |
| Windows 10 Version 1803 for x64-based Systems | 17134.1425 | KB4550922 | Apr 14, 2020 |
| Windows 10 Version 1809 for 32-bit Systems | 17763.1158 | KB4549949 | Apr 14, 2020 |
| Windows 10 Version 1809 for ARM64-based Systems | 17763.1158 | KB4549949 | Apr 14, 2020 |
| Windows 10 Version 1809 for x64-based Systems | 17763.1158 | KB4549949 | Apr 14, 2020 |
| Windows 10 Version 1903 for 32-bit Systems | KB4549951 | Apr 14, 2020 | |
| Windows 10 Version 1903 for ARM64-based Systems | KB4549951 | Apr 14, 2020 | |
| Windows 10 Version 1903 for x64-based Systems | KB4549951 | Apr 14, 2020 | |
| Windows 10 Version 1909 for 32-bit Systems | KB4549951 | Apr 14, 2020 | |
| Windows 10 Version 1909 for ARM64-based Systems | KB4549951 | Apr 14, 2020 | |
| Windows 10 Version 1909 for x64-based Systems | KB4549951 | Apr 14, 2020 | |
| Windows 10 for 32-bit Systems | 10240.18545 | KB4550930 | Apr 14, 2020 |
| Windows 10 for x64-based Systems | 10240.18545 | KB4550930 | Apr 14, 2020 |
| Windows 7 for 32-bit Systems Service Pack 1 | KB4550965 | Apr 14, 2020 | |
| Windows 7 for 32-bit Systems Service Pack 1 | KB4550964 | Apr 14, 2020 | |
| Windows 7 for x64-based Systems Service Pack 1 | KB4550965 | Apr 14, 2020 | |
| Windows 7 for x64-based Systems Service Pack 1 | KB4550964 | Apr 14, 2020 | |
| Windows 8.1 for 32-bit systems | KB4550961 | Apr 14, 2020 | |
| Windows 8.1 for 32-bit systems | KB4550970 | Apr 14, 2020 | |
| Windows 8.1 for x64-based systems | KB4550961 | Apr 14, 2020 | |
| Windows 8.1 for x64-based systems | KB4550970 | Apr 14, 2020 | |
| Windows RT 8.1 | KB4550961 | Apr 14, 2020 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4550965 | Apr 14, 2020 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4550964 | Apr 14, 2020 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4550965 | Apr 14, 2020 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4550964 | Apr 14, 2020 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4550957 | Apr 14, 2020 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4550951 | Apr 14, 2020 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | KB4550957 | Apr 14, 2020 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | KB4550951 | Apr 14, 2020 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB4550957 | Apr 14, 2020 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB4550951 | Apr 14, 2020 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | KB4550957 | Apr 14, 2020 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | KB4550951 | Apr 14, 2020 | |
| Windows Server 2012 | KB4550917 | Apr 14, 2020 | |
| Windows Server 2012 | KB4550971 | Apr 14, 2020 | |
| Windows Server 2012 (Server Core installation) | KB4550917 | Apr 14, 2020 | |
| Windows Server 2012 (Server Core installation) | KB4550971 | Apr 14, 2020 | |
| Windows Server 2012 R2 | KB4550961 | Apr 14, 2020 | |
| Windows Server 2012 R2 | KB4550970 | Apr 14, 2020 | |
| Windows Server 2012 R2 (Server Core installation) | KB4550961 | Apr 14, 2020 | |
| Windows Server 2012 R2 (Server Core installation) | KB4550970 | Apr 14, 2020 | |
| Windows Server 2016 | 14393.3630 | KB4550929 | Apr 14, 2020 |
| Windows Server 2016 (Server Core installation) | 14393.3630 | KB4550929 | Apr 14, 2020 |
| Windows Server 2019 | 17763.1158 | KB4549949 | Apr 14, 2020 |
| Windows Server 2019 (Server Core installation) | 17763.1158 | KB4549949 | Apr 14, 2020 |
| Windows Server, version 1803 (Server Core Installation) | 17134.1425 | KB4550922 | Apr 14, 2020 |
| Windows Server, version 1903 (Server Core installation) | KB4549951 | Apr 14, 2020 | |
| Windows Server, version 1909 (Server Core installation) | KB4549951 | Apr 14, 2020 | |
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