CVEs / CVE-2026-102870
CVE-2026-102870: Microsoft .NET 10.0 installed on Linux vulnerability
- high 8.8 CVSS 3.1 (from the CNA)
- EPSS 0.9% chance of exploitation in the next 30 days, higher than 59% of CVEs (30 Oct 2026)
- Last changed at its sources
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Description
Improper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft .NET 10.0 installed on Linux | from 10.0.0, before 10.0.403 | 10.0.403 |
| Microsoft .NET 10.0 installed on Mac OS | from 10.0.0, before 10.0.403 | 10.0.403 |
| Microsoft .NET 10.0 installed on Windows | from 10.0.0, before 10.0.403 | 10.0.403 |
| Microsoft .NET 11.0 installed on Linux | from 11.0.0-preview.1, before 11.0.100-rc.3 | 11.0.100-rc.3 |
| Microsoft .NET 11.0 installed on Mac OS | from 11.0.0-preview.1, before 11.0.100-rc.3 | 11.0.100-rc.3 |
| Microsoft .NET 11.0 installed on Windows | from 11.0.0-preview.1, before 11.0.100-rc.3 | 11.0.100-rc.3 |
| Microsoft Microsoft Visual Studio 2019 version 16.11 | from 16.11.0, before 16.11.61 | 16.11.61 |
| Microsoft Microsoft Visual Studio 2022 version 17.14 | from 17.14.0, before 17.14.43 | 17.14.43 |
| Microsoft Microsoft Visual Studio 2026 version 18.10 | from 18.10.0, before 18.10.4 | 18.10.4 |
| Microsoft Microsoft Visual Studio 2026 version 18.11 | from 18.11.0, before 18.11.2 | 18.11.2 |
| Microsoft Microsoft Visual Studio 2026 version 18.12 | from 18.12.0, before 18.12 Insiders 3 | 18.12 Insiders 3 |
| Microsoft Microsoft.AspNetCore.Components.WebAssembly.DevServer | from 11.0.0-preview.1, before 10.0.14 | 10.0.14 |
| Microsoft Microsoft.AspNetCore.Components.WebAssembly.Server | from 10.0.0, before 10.0.13 | 10.0.13 |
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 30 Oct 2026.
Severity
| CVSS 3.1 | 8.8 highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-94 |
On the Stackurity blog
References
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.