Security Updates for Microsoft .NET Framework (May 2020)

high Nessus Plugin ID 136564


The Microsoft .NET Framework installation on the remote host is affected by multiple vulnerabilities.


The Microsoft .NET Framework installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :

- A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Core or .NET Framework web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET Core or .NET Framework application. The update addresses the vulnerability by correcting how the .NET Core or .NET Framework web application handles web requests. (CVE-2020-1108)

- An elevation of privilege vulnerability exists in .NET Framework which could allow an attacker to elevate their privilege level. (CVE-2020-1066)


Microsoft has released security updates for Microsoft .NET Framework.

See Also

Plugin Details

Severity: High

ID: 136564

File Name: smb_nt_ms20_may_dotnet.nasl

Version: 1.6

Type: local

Agent: windows

Published: 5/13/2020

Updated: 5/24/2021

Risk Information

CVSS Score Source: CVE-2020-1066


Risk Factor: High

Score: 8.9


Risk Factor: Medium

Base Score: 4.6

Temporal Score: 4

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:H/RL:OF/RC:C


Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:.net_framework

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/12/2020

Vulnerability Publication Date: 5/12/2020

Reference Information

CVE: CVE-2020-1066, CVE-2020-1108

MSKB: 4556812, 4556826, 4556807, 4556813, 4556406, 4556405, 4556404, 4556403, 4556402, 4556401, 4556400, 4556441, 4552926, 4552931, 4556399, 4552928, 4552929

MSFT: MS20-4556812, MS20-4556826, MS20-4556807, MS20-4556813, MS20-4556406, MS20-4556405, MS20-4556404, MS20-4556403, MS20-4556402, MS20-4556401, MS20-4556400, MS20-4556441, MS20-4552926, MS20-4552931, MS20-4556399, MS20-4552928, MS20-4552929

IAVA: 2020-A-0207-S