CVE-2020-1476

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2020
Source publication: Aug 17, 2020
Source updated: Aug 4, 2024
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

ASP.NET and .NET Elevation of Privilege Vulnerability

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. To exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server. The update addresses the vulnerability by changing how ASP.NET and .NET handle requests.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Microsoft .NET Framework 4.8

Vendor: Microsoft
Product: Microsoft .NET Framework 4.8
Platforms: Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 1709 for 32-bit Systems
Windows 10 Version 1803 for 32-bit Systems
Windows 10 Version 1803 for x64-based Systems
Windows 10 Version 1709 for x64-based Systems
Windows 8.1 for x64-based systems
Windows 8.1 for 32-bit systems
Windows 7 for 32-bit Systems Service Pack 1
Windows Server 2016 (Server Core installation)
Windows 10 Version 1607 for x64-based Systems
Windows Server 2016
Windows Server 2012 R2 (Server Core installation)
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2012 R2
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows RT 8.1
Default status: Unknown

Microsoft .NET Framework 4.8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
4.8.0	`affected`	custom	publication	Unavailable	None listed

Microsoft .NET Framework 3.5 AND 4.8

Vendor: Microsoft
Product: Microsoft .NET Framework 3.5 AND 4.8
Platforms: Windows 10 Version 1909 for 32-bit Systems
Windows Server 2019
Windows 10 Version 1809 for 32-bit Systems
Windows Server 2019 (Server Core installation)
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 1903 for ARM64-based Systems
Windows 10 Version 1909 for x64-based Systems
Windows 10 Version 1903 for 32-bit Systems
Windows 10 Version 1909 for ARM64-based Systems
Windows 10 Version 2004 for ARM64-based Systems
Windows Server, version 1909 (Server Core installation)
Windows Server, version 1903 (Server Core installation)
Windows 10 Version 1903 for x64-based Systems
Windows Server, version 2004 (Server Core installation)
Windows 10 Version 2004 for x64-based Systems
Windows 10 Version 2004 for 32-bit Systems
Default status: Unknown

Microsoft .NET Framework 3.5 AND 4.8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
4.8.0	`affected`	custom	publication	Unavailable	None listed

Microsoft .NET Framework 2.0 Service Pack 2

Vendor: Microsoft
Product: Microsoft .NET Framework 2.0 Service Pack 2
Platforms: Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Default status: Unknown

Microsoft .NET Framework 2.0 Service Pack 2 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
2.0.0	`affected`	custom	publication	Unavailable	None listed

Microsoft .NET Framework 4.5.2

Vendor: Microsoft
Product: Microsoft .NET Framework 4.5.2
Platforms: Windows Server 2012 R2 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows 8.1 for 32-bit systems
Windows 7 for x64-based Systems Service Pack 1
Windows 7 for 32-bit Systems Service Pack 1
Windows Server 2012 R2
Windows Server 2012
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows RT 8.1
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows 8.1 for x64-based systems
Windows Server 2012 (Server Core installation)
Default status: Unknown

Microsoft .NET Framework 4.5.2 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
4.0.0.0	`affected`	custom	publication	Unavailable	None listed

Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2

Vendor: Microsoft
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
Platforms: Windows RT 8.1
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows 8.1 for x64-based systems
Windows 7 for 32-bit Systems Service Pack 1
Windows 8.1 for 32-bit systems
Default status: Unknown

Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
4.0.0.0	`affected`	custom	publication	Unavailable	None listed

Microsoft .NET Framework 3.5 AND 4.7.2

Vendor: Microsoft
Product: Microsoft .NET Framework 3.5 AND 4.7.2
Platforms: Windows 10 Version 1803 for ARM64-based Systems
Windows 10 Version 1803 for x64-based Systems
Windows 10 Version 1809 for ARM64-based Systems
Windows Server 2019 (Server Core installation)
Windows 10 Version 1803 for 32-bit Systems
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems
Windows Server 2019
Default status: Unknown

Microsoft .NET Framework 3.5 AND 4.7.2 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
4.7.0	`affected`	custom	publication	Unavailable	None listed

Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2

Vendor: Microsoft
Product: Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
Platforms: Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1607 for 32-bit Systems
Windows Server 2016
Windows Server 2016 (Server Core installation)
Default status: Unknown

Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
3.0.0.0	`affected`	custom	publication	Unavailable	None listed

Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2

Vendor: Microsoft
Product: Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2
Platforms: Windows 10 for 32-bit Systems
Windows 10 for x64-based Systems
Default status: Unknown

Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
3.5.0	`affected`	custom	publication	Unavailable	None listed

Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2

Vendor: Microsoft
Product: Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2
Platforms: Windows 10 Version 1709 for 32-bit Systems
Windows 10 Version 1709 for x64-based Systems
Windows 10 Version 1709 for ARM64-based Systems
Default status: Unknown

Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
3.0	`affected`	custom	publication	Unavailable	None listed

Microsoft .NET Framework 4.6

Vendor: Microsoft
Product: Microsoft .NET Framework 4.6
Platforms: Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Default status: Unknown

Microsoft .NET Framework 4.6 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
4.0.0.0	`affected`	custom	publication	Unavailable	None listed

Microsoft .NET Framework 3.5

Vendor: Microsoft
Product: Microsoft .NET Framework 3.5
Platforms: Windows 8.1 for x64-based systems
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows 8.1 for 32-bit systems
Windows Server 2012 R2 (Server Core installation)
Windows Server 2012 R2
Default status: Unknown

Microsoft .NET Framework 3.5 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
3.5.0	`affected`	custom	publication	Unavailable	None listed

Microsoft .NET Framework 3.5.1

Vendor: Microsoft
Product: Microsoft .NET Framework 3.5.1
Platforms: Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows 7 for 32-bit Systems Service Pack 1
Default status: Unknown

Microsoft .NET Framework 3.5.1 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
3.5.0	`affected`	custom	publication	Unavailable	None listed