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.NET

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

Important CVSS 7.8 EPSS 0.00918 2026-07 archive

Executive Summary

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

Overview

7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Remote Code Execution
Weakness CWE-502: Deserialization of Untrusted Data
Released Jul 14 2026
Last Updated Jul 14 2026
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00918 — 0.57142 percentile
NVD CVSS 7.8 HIGH — matches MSRC

CVSS Vector

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
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.8

EPSS Score

0.00918
probability of exploitation in the next 30 days
0.57142 percentile - updated 2026-08-14
View on FIRST.org

Affected Products

5 affected products
Product KB Article Severity Impact Restart Required
.NET 8.0 installed on Windows 5104032 (Security Update) Important Remote Code Execution Maybe
.NET 9.0 installed on Windows 5104033 (Security Update) Important Remote Code Execution Maybe
Microsoft Visual Studio 2022 version 17.12 Release Notes (Security Update) Important Remote Code Execution Maybe
Microsoft Visual Studio 2022 version 17.14 Release Notes (Security Update) Important Remote Code Execution Maybe
Microsoft Visual Studio 2026 version 18.7 Release Notes (Security Update) Important Remote Code Execution Maybe

Patches

3 patches
Article Type Restart
5104032 Security Update Maybe
5104033 Security Update Maybe
Release Notes Security Update Maybe

Exploits & PoC

Detection Rules

Acknowledgments

Kevin Gosse
41ae55e9310ff27fa6f26af4727e5590

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