CVE-2026-50649: .NET Remote Code Execution Vulnerability

Published Jul 14, 2026
·
Updated

.NET Remote Code Execution Vulnerability

Other sources

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

— Microsoft

Affected Software

84 affected componentsFixes available
Microsoft .NET 8.0 installed on Windows<8.0.29
8.0.29
Microsoft Visual Studio 2022=17.12
17.12.22
Microsoft .NET 9.0 installed on Windows<9.0.18
9.0.18
Microsoft Visual Studio 2022=17.14
17.14.36
Microsoft Visual Studio 2026=18.7
18.7.4
Microsoft .NET Framework=3.5
2.0.50727.8983 & 3.0.30729.8978
Microsoft .NET Framework=4.8
4.8.4803.0
Microsoft .NET Framework=3.5
2.0.50727.8983 & 3.0.30729.8978
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.9168
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, =4.8.1
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=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=4.6.2, =4.7, =4.7.1, =4.7.2
4.7.4143.0
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, =4.7.2
2.0.50727.9069 & 3.0.30729.9067 & 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=3.5, =4.8
2.0.50727.9182 & 3.0.30729.9168 & 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
2.0.50727.9182 & 3.0.30729.9168
Microsoft .NET Framework=4.8.1
4.8.9340.0
All of the following
Microsoft .NET Framework=4.8.1
Any of the following
Microsoft Windows 11 26h1
Microsoft Windows 11 26h1
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 Server 2022
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
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 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 Server 2016
Microsoft Windows Server 2019
All of the following
Microsoft .NET Framework=3.5
Any of the following
Microsoft Windows 11 26h1
Microsoft Windows 11 26h1
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Visual Studio 2026>=18.7.0<18.7.4

Remediation

Patch Available

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50649

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
Description
CVE Published
via MITRE·07:29 PM
Data Sourced
via MITRE·07:29 PM
DescriptionSeverity
Data Sourced
via Red Hat·08:02 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·08:17 PM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2026-50649?

CVE-2026-50649 has a high severity rating of 7.8 on the CVSS scale.

2

How do I fix CVE-2026-50649?

To fix CVE-2026-50649, update your Microsoft .NET Framework and Visual Studio to the latest patched versions.

3

What software is affected by CVE-2026-50649?

CVE-2026-50649 affects Microsoft .NET Framework, Microsoft Visual Studio 2022, .NET 8.0, .NET 9.0, and Microsoft Visual Studio 2026.

4

What type of vulnerability is CVE-2026-50649?

CVE-2026-50649 is a remote code execution vulnerability resulting from the deserialization of untrusted data in .NET.

5

Can CVE-2026-50649 be exploited by an unauthorized user?

Yes, CVE-2026-50649 can be exploited by an unauthorized attacker to execute code locally.

Company

Resources

Contact

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