CVE-2026-102870

ASP.NET Core Remote Code Execution Vulnerability

Published Oct 13, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
Improper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-g27p-qf6j-c96c Microsoft Security Advisory CVE-2026-102870 - ASP.NET Core Remote Code Execution Vulnerability
Ubuntu USN Ubuntu USN USN-8958-1 .NET vulnerabilities
History
Type Values Removed Values Added
First Time appeared Microsoft .net 10.0 Installed On Linux
Microsoft .net 10.0 Installed On Mac Os
Microsoft .net 10.0 Installed On Windows
Microsoft .net 11.0 Installed On Linux
Microsoft .net 11.0 Installed On Mac Os
Microsoft .net 11.0 Installed On Windows
Microsoft microsoft.aspnetcore.components.webassembly.devserver
Microsoft microsoft Visual Studio 2019 Version 16.11
Microsoft microsoft Visual Studio 2026 Version 18.11
Microsoft microsoft Visual Studio 2026 Version 18.12
CPEs cpe:2.3:a:microsoft:.net_10.0_installed_on_linux:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_10.0_installed_on_mac_os:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_10.0_installed_on_windows:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_11.0_installed_on_linux:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_11.0_installed_on_mac_os:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_11.0_installed_on_windows:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.components.webassembly.devserver:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2019_version_16.11:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.11:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.12:*:*:*:*:*:*:*:*
Vendors & Products Microsoft .net 10.0 Installed On Linux
Microsoft .net 10.0 Installed On Mac Os
Microsoft .net 10.0 Installed On Windows
Microsoft .net 11.0 Installed On Linux
Microsoft .net 11.0 Installed On Mac Os
Microsoft .net 11.0 Installed On Windows
Microsoft microsoft.aspnetcore.components.webassembly.devserver
Microsoft microsoft Visual Studio 2019 Version 16.11
Microsoft microsoft Visual Studio 2026 Version 18.11
Microsoft microsoft Visual Studio 2026 Version 18.12
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network.
Title ASP.NET Core Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft microsoft.aspnetcore.components.webassembly.server
Microsoft microsoft Visual Studio 2026 Version 18.10
Microsoft visual Studio 2022
Weaknesses CWE-94
CPEs cpe:2.3:a:microsoft:microsoft.aspnetcore.components.webassembly.server:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.10:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft microsoft.aspnetcore.components.webassembly.server
Microsoft microsoft Visual Studio 2026 Version 18.10
Microsoft visual Studio 2022
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}