CVE-2019-1113 — .NET Framework Remote Code Execution Vulnerability

Executive Summary

A remote code execution vulnerability exists in .NET software when the software fails to check the source markup of a file. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of .NET Framework. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. The security update addresses the vulnerability by correcting how .NET Framework checks the source markup of a file.

Overview

8.8

CVSS HIGH

Critical

MS Severity

Not Exploited

MS Exploit Status

More Likely

MS Exploit Likelihood

Category Remote Code Execution

Released Jul 9 2019

Last Updated Jul 9 2019

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.09996 — 0.9511 percentile

NVD CVSS 8.8 HIGH — differs from MSRC

CVSS Vector

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

ATTACK VECTOR

Network

ATTACK COMPLEXITY

Low

PRIVILEGES REQUIRED

None

USER INTERACTION

Required

SCOPE

Unchanged

EPSS Score

0.09996

probability of exploitation in the next 30 days

0.9511 percentile - updated 2026-07-25

View on FIRST.org

Affected Products

29 affected products

Product	KB Article	Severity	Impact	Restart Required
Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) Critical Remote Code Execution 4489489; 4499409 4499409; 4503868 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) Critical Remote Code Execution 4489489; 4499409 4499409; 4503868 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) Critical Remote Code Execution 4489489; 4499409 4499409; 4503868 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) Critical Remote Code Execution 4489489; 4499409 4499409; 4503868 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) Critical Remote Code Execution 4489489; 4499409 4499409; 4503868 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) Critical Remote Code Execution 4489489; 4499409 4499409; 4503868 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems 4507419 (Security Update) 4507419 (Security Update) Critical Remote Code Execution 4486553; 4499405; 4503864 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems 4507419 (Security Update) 4507419 (Security Update) Critical Remote Code Execution 4486553; 4499405; 4503864 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 4507419 (Security Update) 4507419 (Security Update) Critical Remote Code Execution 4486553; 4499405; 4503864 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) 4507419 (Security Update) 4507419 (Security Update) Critical Remote Code Execution 4486553; 4499405; 4503864 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems 4507419 (Security Update) 4507419 (Security Update) Critical Remote Code Execution 4486553; 4499405; 4503864 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems 4507419 (Security Update) 4507419 (Security Update) Critical Remote Code Execution 4486553; 4499405; 4503864 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems	`4506991 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems	`4506991 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 4507419 (Security Update) 4507419 (Security Update) Critical Remote Code Execution 4486553; 4499405; 4503864 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) 4507419 (Security Update) 4507419 (Security Update) Critical Remote Code Execution 4486553; 4499405; 4503864 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation)	`4506991 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 3.5 on Windows 10 for 32-bit Systems	`4507458 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5 on Windows 10 for x64-based Systems	`4507458 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for 32-bit Systems	`4507460 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for x64-based Systems	`4507460 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for 32-bit Systems	`4507450 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for x64-based Systems	`4507450 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for 32-bit Systems	`4507455 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for x64-based Systems	`4507455 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for 32-bit Systems	`4507435 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for x64-based Systems	`4507435 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2012 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) Critical Remote Code Execution 4499407; 4503866 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) Critical Remote Code Execution 4499407; 4503866 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2012 R2 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2016	`4507460 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5 on Windows Server 2016 (Server Core installation)	`4507460 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5 on Windows Server, version 1803 (Server Core Installation)	`4507435 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows RT 8.1 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) Critical Remote Code Execution 4489489; 4499409 4499409; 4503868 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) Critical Remote Code Execution 4489489; 4499409 4499409; 4503868 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2012 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) Critical Remote Code Execution 4499407; 4503866 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) Critical Remote Code Execution 4499407; 4503866 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) Critical Remote Code Execution 4489489; 4499409 4499409; 4503868 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) 4507423 (Monthly Rollup) 4507414 (Security Only) Critical Remote Code Execution 4489489; 4499409 4499409; 4503868 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems	`4507458 (Security Update)`	Critical	Remote Code Execution	Yes
Microsoft .NET Framework 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems	`4507458 (Security Update)`	Critical	Remote Code Execution	Yes
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 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None 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 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None 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 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None 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 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows RT 8.1 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None 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 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None 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) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) Critical Remote Code Execution 4499407; 4503866 Base: N/A Temporal: N/A Vector: N/A Maybe None 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) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) Critical Remote Code Execution 4499407; 4503866 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None 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) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems	`4506986 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems	`4506986 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 4.8 on Windows 10 Version 1703 for 32-bit Systems	`4506987 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 4.8 on Windows 10 Version 1703 for x64-based Systems	`4506986 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems	`4506988 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems	`4506986 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems	`4506989 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems	`4506989 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows RT 8.1 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) 4507420 (Monthly Rollup) 4507411 (Security Only) Critical Remote Code Execution 4499406; 4503865 4503865 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows Server 2012 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) Critical Remote Code Execution 4499407; 4503866 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) 4507421 (Monthly Rollup) 4507412 (Security Only) Critical Remote Code Execution 4499407; 4503866 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows Server 2012 R2 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507422 (Monthly Rollup) 4507413 (Security Only) 4507413 (Security Only) 4507422 (Monthly Rollup) 4507413 (Security Only) Critical Remote Code Execution 4499408; 4503867 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows Server 2016	`4506986 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation)	`4506986 (Security Update)`	Critical	Remote Code Execution	Maybe
Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation)	`4506989 (Security Update)`	Critical	Remote Code Execution	Maybe

Patches

10 patches

Article	Type	Restart
`4506991`	Security Update	Maybe
`4507458`	Security Update	Yes
`4507460`	Security Update	Yes
`4507450`	Security Update	Yes
`4507455`	Security Update	Yes
`4507435`	Security Update	Yes
`4506986`	Security Update	Maybe
`4506987`	Security Update	Maybe
`4506988`	Security Update	Maybe
`4506989`	Security Update	Maybe

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

Saif El-Sherei of Microsoft Corporation

References

MSRC Advisory MITRE NVD