MicrosoftCVE-2026-62886
Microsoft .NET 10.0: integer overflow
High7.8CVE-2026-62886 · Published Aug 11, 2026 · updated Sep 8, 2026
Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| .NET 10.0 Product | >= 10.0.0, < 10.0.11 | 10.0.11 |
| .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 .NET Framework 3.5 Product | >= 3.5.0, < 2.0.50727.8984 & 3.0.30729.8980 | 2.0.50727.8984 & 3.0.30729.8980 |
| Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 Product | >= 3.0.0.0, < 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0 | 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0 |
| Microsoft .NET Framework 3.5 AND 4.7.2 Product | >= 4.7.0, < 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0 | 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0 |
| Microsoft .NET Framework 3.5 AND 4.8 Product | >= 4.8.0, < 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4806.0 | 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4806.0 |
| Microsoft .NET Framework 3.5 AND 4.8.1 Product | >= 4.8.1, < 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0 | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0 |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 Product | >= 4.7.0, < 4.7.4145.0 | 4.7.4145.0 |
| Microsoft .NET Framework 4.8 Product | >= 4.8.0, < 4.8.4806.0 | 4.8.4806.0 |
| Microsoft .NET Framework 4.8.1 Product | >= 4.8.0.0, < 4.8.9347.0 | 4.8.9347.0 |
| Microsoft Visual Studio 2022 version 17.14 Product | >= 17.14.0, < 17.14.38 | 17.14.38 |
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 |