CVE-2020-1476
ASP.NET and .NET Elevation of Privilege Vulnerability
CVE-2020-1476 is fixed in 89 products on 1 platform, first by KB4571694, released August 11, 2020. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
n/a
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0113
66th percentile
<p>An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files.</p> <p>To exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server.</p> <p>The update addresses the vulnerability by changing how ASP.NET and .NET handle requests.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4570503 | Aug 11, 2020 | |
| Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4570509 | Aug 11, 2020 | |
| Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB4570503 | Aug 11, 2020 | |
| Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB4570509 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems | 14393.3866 | KB4571694 | Aug 11, 2020 |
| Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems | 14393.3866 | KB4571694 | Aug 11, 2020 |
| Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 | 14393.3866 | KB4571694 | Aug 11, 2020 |
| Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation) | 14393.3866 | KB4571694 | Aug 11, 2020 |
| Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems | 10240.18666 | KB4571692 | Aug 11, 2020 |
| Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems | 10240.18666 | KB4571692 | Aug 11, 2020 |
| Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems | 16299.2045 | KB4571741 | Aug 11, 2020 |
| Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for ARM64-based Systems | 16299.2045 | KB4571741 | Aug 11, 2020 |
| Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems | 16299.2045 | KB4571741 | Aug 11, 2020 |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems | 17134.1667 | KB4571709 | Aug 11, 2020 |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for ARM64-based Systems | 17134.1667 | KB4571709 | Aug 11, 2020 |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems | 17134.1667 | KB4571709 | Aug 11, 2020 |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems | KB4570505 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems | KB4570505 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | KB4570505 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | KB4570505 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) | KB4570505 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems | KB4570505 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | KB4570505 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems | KB4569751 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for ARM64-based Systems | KB4569751 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems | KB4569751 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems | KB4569751 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for ARM64-based Systems | KB4569751 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systems | KB4569751 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for 32-bit Systems | KB4569745 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for ARM64-based Systems | KB4569745 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for x64-based Systems | KB4569745 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | KB4570505 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) | KB4570505 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation) | KB4569751 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation) | KB4569751 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 2004 (Server Core installation) | KB4569745 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 | KB4570507 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 | KB4570501 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | KB4570507 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | KB4570501 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1 | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1 | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1 | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1 | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows RT 8.1 | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4570503 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4570509 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB4570503 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB4570509 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 | KB4570507 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 | KB4570501 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) | KB4570507 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) | KB4570501 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4570503 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4570509 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB4570503 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB4570509 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for 32-bit Systems Service Pack 1 | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for 32-bit Systems Service Pack 1 | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for x64-based Systems Service Pack 1 | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for x64-based Systems Service Pack 1 | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for 32-bit systems | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for 32-bit systems | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for x64-based systems | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for x64-based systems | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows RT 8.1 | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | KB4570507 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | KB4570501 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) | KB4570507 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) | KB4570501 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation) | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation) | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems | KB4569746 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems | KB4569746 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems | KB4569748 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems | KB4569748 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems | KB4569749 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems | KB4569749 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1 | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1 | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1 | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1 | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows RT 8.1 | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4570506 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4570500 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 | KB4570507 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 | KB4570501 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | KB4570507 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | KB4570501 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | KB4570508 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | KB4570502 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2016 | KB4569746 | Aug 11, 2020 | |
| Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation) | KB4569746 | Aug 11, 2020 | |
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