Vulnerability Intelligence Report
.NET and Visual Studio Remote Code Execution Vulnerability
CVE-2026-70197
Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.
No Active Exploit Signals
CVSS Base Score
8.1
HIGH
Exploitability:2.3
Impact Score:5.9
EPSS Probability:0.79%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-787 ↗CWE-787: Out-of-bounds Write
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | .NET 10.0 installed on Linux | 10.0.0 < 10.0.403 (affected) |
| Microsoft | .NET 10.0 installed on Mac OS | 10.0.0 < 10.0.403 (affected) |
| Microsoft | .NET 10.0 installed on Windows | 10.0.0 < 10.0.403 (affected) |
| Microsoft | .NET 10.0 runtime | 10.0.0 < 10.0.13 (affected) |
| Microsoft | .NET 11.0 installed on Linux | 11.0.0-preview.1 < 11.0.100-rc.3 (affected) |
| Microsoft | .NET 11.0 installed on Mac OS | 11.0.0-preview.1 < 11.0.100-rc.3 (affected) |
| Microsoft | .NET 11.0 installed on Windows | 11.0.0-preview.1 < 11.0.100-rc.3.26522.148 (affected) |
| Microsoft | .NET 11.0 runtime | 11.0.0 < 11.0.0-rc.2 (affected) |
| Microsoft | .NET 8.0 installed on Linux | 8.0.0 < 8.0.427 (affected) |
| Microsoft | .NET 8.0 installed on Mac OS | 8.0.0 < 8.0.427 (affected) |
| Microsoft | .NET 8.0 installed on Windows | 8.0.0 < 8.0.427 (affected) |
| Microsoft | .NET 8.0 runtime | 8.0.0 < 8.0.32 (affected) |
| Microsoft | .NET 9.0 installed on Linux | 9.0.0 < 9.0.320 (affected) |
| Microsoft | .NET 9.0 installed on Mac OS | 9.0.0 < 9.0.320 (affected) |
| Microsoft | .NET 9.0 installed on Windows | 9.0.0 < 9.0.320 (affected) |
| Microsoft | .NET 9.0 runtime | 9.0.0 < 9.0.21 (affected) |
| Microsoft | Microsoft Visual Studio 2019 version 16.11 | 16.11.0 < 16.11.61 (affected) |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 < 17.14.43 (affected) |
| Microsoft | Microsoft Visual Studio 2026 version 18.10 | 18.10.0 < 18.10.4 (affected) |
| Microsoft | Microsoft Visual Studio 2026 version 18.11 | 18.11.0 < 18.11.2 (affected) |
| Microsoft | Microsoft Visual Studio 2026 version 18.12 | 18.12.0 < 18.12 Insiders 3 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.788%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2026-08-03T23:48:30 |
| Published | 2026-10-13T19:00:26 |
| Patch Date | 2026-10-13 |
| Last Updated | 2026-10-31T18:06:20 |
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