MicrosoftCVE-2026-62871
Microsoft .NET 8.0: out-of-bounds write
High7.8CVE-2026-62871 · Published Aug 11, 2026 · updated Aug 13, 2026
Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| .NET 8.0 Product | >= 8.0.0, < 8.0.30 | 8.0.30 |
| .NET 9.0 Product | >= 9.0.0, < 9.0.19 | 9.0.19 |
| Microsoft Visual Studio 2022 version 17.14 Product | >= 17.14.0, < 17.14.38 | 17.14.38 |
| Microsoft Visual Studio 2026 version 18.8 Product | >= 18.0, < 18.8.3 | 18.8.3 |
Details and references
More Microsoft advisories
All Microsoft| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 11 | Copilot Chat Security Feature Bypass Vulnerability | High7.1 | 1.132.1 |
| Aug 11 | Copilot Custom Agent Hook Remote Code Execution Vulnerability | High7.8 | 1.132.1 |
| Aug 11 | Information disclosure vulnerability | Medium | 1.132.1 |
| Aug 11 | Fileless RCE in VS Code Web Remote Terminal via URL-Controlled NODE_OPTIONS | High8.8 | 1.132.1 |
| Aug 11 | Visual Studio Code web deployments - environmentService.ts - RCE via NODE_OPTIONS --import from URL payload | High8.8 | 1.132.1 |
| Aug 11 | TerminalInstance._createProcess - Workspace Trust bypass via terminal waitOnExit | High7.8 | 1.132.1 |