CVE-2026-50646: .NET Framework Remote Code Execution Vulnerability

Published Jul 14, 2026
·
Updated

.NET Framework Remote Code Execution Vulnerability

Other sources

Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.

— Microsoft

Affected Software

83 affected componentsFixes available
Microsoft .NET 9.0 installed on Windows<9.0.18
9.0.18
Microsoft .NET 8.0 installed on Windows<8.0.29
8.0.29
Microsoft Visual Studio 2022=17.14
17.14.36
Microsoft Visual Studio 2022=17.12
17.12.22
Microsoft Visual Studio 2026=18.7
18.7.4
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9340.0
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9340.0
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0
Microsoft .NET Framework=4.6.2, =4.7, =4.7.1, =4.7.2
4.7.4143.0
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0
Microsoft .NET Framework=3.5, =4.7.2
2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0
Microsoft .NET Framework=3.5, =4.8
2.0.50727.9182 & 3.0.30729.9168 & 4.8.4803.0
Microsoft .NET Framework=4.6.2, =4.7, =4.7.1, =4.7.2
4.7.4143.0
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0
Microsoft .NET Framework=3.5, =4.8
2.0.50727.9182 & 3.0.30729.9168 & 4.8.4803.0
Microsoft .NET Framework=4.8
4.8.4803.0
Microsoft .NET Framework=3.5, =4.8
2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0
Microsoft .NET Framework=4.8
4.8.4803.0
Microsoft .NET Framework=4.8
4.8.4803.0
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.91684.8.9340.0
Microsoft .NET Framework=3.5
2.0.50727.8983 & 3.0.30729.8978
Microsoft .NET Framework=3.5, =4.7.2
2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0
Microsoft .NET Framework=3.5
2.0.50727.8983 & 3.0.30729.8978
All of the following
Microsoft .NET Framework=4.8
Any of the following
Microsoft Windows 10 1607
Microsoft Windows 10 1607
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
All of the following
Any of the following
Microsoft .NET Framework=4.6.2
Microsoft .NET Framework=4.7
Microsoft .NET Framework=4.7.1
Microsoft .NET Framework=4.7.2
Any of the following
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
All of the following
Any of the following
Microsoft .NET Framework=3.5
Microsoft .NET Framework=4.8.1
Any of the following
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 11 23h2
Microsoft Windows 11 23h2
Microsoft Windows 11 24h2
Microsoft Windows 11 24h2
Microsoft Windows 11 25h2
Microsoft Windows 11 25h2
Microsoft Windows 11 26h1
Microsoft Windows 11 26h1
Microsoft Windows Server 2022
All of the following
Any of the following
Microsoft .NET Framework=3.5
Microsoft .NET Framework=4.8
Any of the following
Microsoft Windows 10 1809
Microsoft Windows 10 1809
Microsoft Windows 10 1809
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows Server 2019
Microsoft Windows Server 2022
All of the following
Any of the following
Microsoft .NET Framework=3.5
Microsoft .NET Framework=4.7.2
Any of the following
Microsoft Windows 10 1607
Microsoft Windows 10 1607
Microsoft Windows 10 1809
Microsoft Windows 10 1809
Microsoft Windows 10 1809
Microsoft Windows Server 2016
Microsoft Windows Server 2019
All of the following
Microsoft .NET Framework=3.5
Any of the following
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
All of the following
Any of the following
Microsoft .NET>=8.0.0<8.0.29
Microsoft .NET>=9.0.0<9.0.18
Microsoft Windows
Microsoft Visual Studio 2022>=17.12.0<17.12.22
Microsoft Visual Studio 2022>=17.14.0<17.14.36
Microsoft Visual Studio 2026>=18.7.0<18.7.4

Remediation

Patch Available

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50646

Event History

Jul 14, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
SeverityAffected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·07:29 PM
Data Sourced
via MITRE·07:29 PM
DescriptionSeverity
Data Sourced
via Red Hat·08:04 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·08:17 PM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2026-50646?

CVE-2026-50646 has a high severity score of 7.8.

2

How do I fix CVE-2026-50646?

To fix CVE-2026-50646, ensure that you have the latest security updates for Microsoft .NET Framework and Visual Studio.

3

What impact does CVE-2026-50646 have on my system?

CVE-2026-50646 allows unauthorized attackers to execute code remotely, potentially leading to a full system compromise.

4

Which software is affected by CVE-2026-50646?

CVE-2026-50646 affects multiple versions of Microsoft .NET Framework and Microsoft Visual Studio.

5

Is CVE-2026-50646 being actively exploited?

As of now, there have been no public reports of active exploitation for CVE-2026-50646.

Company

Resources

Contact

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