CVE-2026-50649

.NET Remote Code Execution Vulnerability

State: Published
Severity: 7.8 High
Published: Jul 14, 2026
Updated: Nov 1, 2026
Reserved: Jun 5, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
.NET 8.0 runtimeMicrosoft	8.0.0 to before 8.0.29Affected
.NET 9.0 runtimeMicrosoft	9.0.0 to before 9.0.18Affected
Microsoft .NET Framework 3.5Microsoft	3.5.0 to before 2.0.50727.9182 & 3.0.30729.9168Affected
Microsoft .NET Framework 3.5 AND 4.7.2Microsoft	4.7.0 to before 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0Affected
Microsoft .NET Framework 3.5 AND 4.8Microsoft	4.8.0 to before 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0Affected
Microsoft .NET Framework 3.5 AND 4.8.1Microsoft	4.8.1 to before 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0Affected
Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2Microsoft	4.7.0 to before 4.7.4143.0Affected
Microsoft .NET Framework 4.8Microsoft	4.8.0 to before 4.8.4803.0Affected
Microsoft .NET Framework 4.8.1Microsoft	4.8.0.0 to before 4.8.9340.0Affected
Microsoft Visual Studio 2026 version 18.7Microsoft	18.0 to before 18.7.4Affected

References

.NET Remote Code Execution Vulnerabilityvendor-advisorypatch

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