Multiple vulnerabilities in Microsoft Developer Tools

Description

Multiple vulnerabilities were found in Microsoft Developer Tools. Malicious users can exploit these vulnerabilities to bypass security restrictions, cause denial of service, execute arbitrary code, gain privileges, obtain sensitive information, spoof user interface.

Below is a complete list of vulnerabilities:

1. A denial of service vulnerability in ASP.NET Core can be exploited remotely to cause denial of service.
2. An information disclosure vulnerability in .NET can be exploited remotely to obtain sensitive information.
3. An elevation of privilege vulnerability in .NET and Visual Studio can be exploited remotely to gain privileges.
4. A remote code execution vulnerability in .NET and Visual Studio can be exploited remotely to execute arbitrary code.
5. An elevation of privilege vulnerability in .NET can be exploited remotely to gain privileges.
6. A security feature bypass vulnerability in Visual Studio Code can be exploited remotely to bypass security restrictions.
7. A remote code execution vulnerability in Visual Studio can be exploited remotely to execute arbitrary code.
8. A tampering vulnerability in Visual Studio Code can be exploited remotely to spoof user interface.
9. An information disclosure vulnerability in GitHub Copilot and Visual Studio Code can be exploited remotely to obtain sensitive information.
10. An information disclosure vulnerability in Visual Studio Code can be exploited remotely to obtain sensitive information.

Original advisories

• CVE-2026-57099

• CVE-2026-58649
• CVE-2026-69304
• CVE-2026-69439
• CVE-2026-69522
• CVE-2026-69805
• CVE-2026-69806
• CVE-2026-70334
• CVE-2026-71328
• CVE-2026-77906
• CVE-2026-77907
• CVE-2026-78461
• CVE-2026-78462
• CVE-2026-81356
• CVE-2026-81357
• CVE-2026-81376
• CVE-2026-81377
• CVE-2026-81378
• CVE-2026-81379
• CVE-2026-81380
• CVE-2026-81381
• CVE-2026-81383

Exploitation

Related products

• Microsoft-.NET-Framework
• Microsoft-Visual-Studio
• Microsoft-Windows
• .NET
• Visual-Studio-Code
• Microsoft-Visual-Studio-Code

CVE list

• CVE-2026-57099
  critical
• CVE-2026-58649
  unknown
• CVE-2026-69304
  high
• CVE-2026-69439
  critical
• CVE-2026-69522
  critical
• CVE-2026-69805
  critical
• CVE-2026-69806
  high
• CVE-2026-70334
  critical
• CVE-2026-71328
  critical
• CVE-2026-77906
  critical
• CVE-2026-77907
  critical
• CVE-2026-78461
  high
• CVE-2026-78462
  critical
• CVE-2026-81356
  critical
• CVE-2026-81357
  critical
• CVE-2026-81376
  critical
• CVE-2026-81377
  high
• CVE-2026-81378
  critical
• CVE-2026-81379
  critical
• CVE-2026-81380
  high
• CVE-2026-81381
  critical
• CVE-2026-81383
  high

KB list

• 5126043
• 5126044
• 5126045
• 5126046
• 5126047
• 5126048
• 5126049
• 5126050
• 5126051
• 5126052
• 5126053
• 5126104
• 5126105
• 5126106
• 5126421
• 5126422
• 5126424
• 5123099

Read more

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