Description
Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.
Published: 2026-10-13
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No solution or workaround provided in the CVE record.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-4mpw-cpwj-hxxj Microsoft Security Advisory CVE-2026-70197 - .NET and Visual Studio Remote Code Execution Vulnerability
History

Sun, 25 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Title .NET Remote Code Execution Vulnerability .NET and Visual Studio Remote Code Execution Vulnerability
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 .net 8.0 Installed On Linux
Microsoft .net 8.0 Installed On Mac Os
Microsoft .net 8.0 Installed On Windows
Microsoft .net 9.0 Installed On Linux
Microsoft .net 9.0 Installed On Mac Os
Microsoft .net 9.0 Installed On Windows
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:.net_8.0_installed_on_linux:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_8.0_installed_on_mac_os:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_8.0_installed_on_windows:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_9.0_installed_on_linux:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_9.0_installed_on_mac_os:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_9.0_installed_on_windows:*:*:*:*:*:*:*:*
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 .net 8.0 Installed On Linux
Microsoft .net 8.0 Installed On Mac Os
Microsoft .net 8.0 Installed On Windows
Microsoft .net 9.0 Installed On Linux
Microsoft .net 9.0 Installed On Mac Os
Microsoft .net 9.0 Installed On Windows
Microsoft microsoft Visual Studio 2019 Version 16.11
Microsoft microsoft Visual Studio 2026 Version 18.11
Microsoft microsoft Visual Studio 2026 Version 18.12

Sat, 17 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Wed, 14 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 13 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
Description Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.
Title .NET Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft .net
Microsoft microsoft Visual Studio 2026 Version 18.10
Microsoft visual Studio 2022
Weaknesses CWE-787
CPEs cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.10:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net
Microsoft microsoft Visual Studio 2026 Version 18.10
Microsoft visual Studio 2022
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


Subscriptions

Microsoft .net .net 10.0 Installed On Linux .net 10.0 Installed On Mac Os .net 10.0 Installed On Windows .net 11.0 Installed On Linux .net 11.0 Installed On Mac Os .net 11.0 Installed On Windows .net 8.0 Installed On Linux .net 8.0 Installed On Mac Os .net 8.0 Installed On Windows .net 9.0 Installed On Linux .net 9.0 Installed On Mac Os .net 9.0 Installed On Windows Microsoft Visual Studio 2019 Version 16.11 Microsoft Visual Studio 2026 Version 18.10 Microsoft Visual Studio 2026 Version 18.11 Microsoft Visual Studio 2026 Version 18.12 Visual Studio 2022
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-10-25T18:42:57.932Z

Reserved: 2026-08-03T23:48:30.861Z

Link: CVE-2026-70197

cve-icon Vulnrichment

Updated: 2026-10-13T20:52:47.810Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-13T19:19:33.790

Modified: 2026-10-25T18:17:00.280

Link: CVE-2026-70197

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-13T19:00:26Z

Links: CVE-2026-70197 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-14T02:30:17Z

Weaknesses