CVE-2026-70197

Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70197

Configurations

No configuration.

History

13 Oct 2026, 19:19

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-13 19:19

Updated : 2026-10-25 18:17

NVD link : CVE-2026-70197

Mitre link : CVE-2026-70197

CVE.ORG link : CVE-2026-70197

JSON object : View

Products Affected

No product.

CWE

CWE-787

Out-of-bounds Write

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"version": "10.0.0", "lessThan": "10.0.403", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 10.0 installed on Mac OS", "versions": [{"status": "affected", "version": "10.0.0", "lessThan": "10.0.403", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 10.0 installed on Windows", "versions": [{"status": "affected", "version": "10.0.0", "lessThan": "10.0.403", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 10.0 runtime", "versions": [{"status": "affected", "version": "10.0.0", "lessThan": "10.0.13", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 11.0 installed on Linux", "versions": [{"status": "affected", "version": "11.0.0-preview.1", "lessThan": "11.0.100-rc.3", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 11.0 installed on Mac OS", "versions": [{"status": "affected", "version": "11.0.0-preview.1", "lessThan": "11.0.100-rc.3", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 11.0 installed on Windows", "versions": [{"status": "affected", "version": "11.0.0-preview.1", "lessThan": "11.0.100-rc.3.26522.148", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 11.0 runtime", "versions": [{"status": "affected", "version": "11.0.0", "lessThan": "11.0.0-rc.2", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 8.0 installed on Linux", "versions": [{"status": "affected", "version": "8.0.0", "lessThan": "8.0.427", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 8.0 installed on Mac OS", "versions": [{"status": "affected", "version": "8.0.0", "lessThan": "8.0.427", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 8.0 installed on Windows", "versions": [{"status": "affected", "version": "8.0.0", "lessThan": "8.0.427", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 8.0 runtime", "versions": [{"status": "affected", "version": "8.0.0", "lessThan": "8.0.32", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 9.0 installed on Linux", "versions": [{"status": "affected", "version": "9.0.0", "lessThan": "9.0.320", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 9.0 installed on Mac OS", "versions": [{"status": "affected", "version": "9.0.0", "lessThan": "9.0.320", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 9.0 installed on Windows", "versions": [{"status": "affected", "version": "9.0.0", "lessThan": "9.0.320", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 9.0 runtime", "versions": [{"status": "affected", "version": "9.0.0", "lessThan": "9.0.21", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2019 version 16.11", "versions": [{"status": "affected", "version": "16.11.0", "lessThan": "16.11.61", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2022 version 17.14", "versions": [{"status": "affected", "version": "17.14.0", "lessThan": "17.14.43", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.10", "versions": [{"status": "affected", "version": "18.10.0", "lessThan": "18.10.4", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.11", "versions": [{"status": "affected", "version": "18.11.0", "lessThan": "18.11.2", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.12", "versions": [{"status": "affected", "version": "18.12.0", "lessThan": "18.12 Insiders 3", "versionType": "custom"}]}]}], "published": "2026-10-13T19:19:33.790", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70197", "source": "secure@microsoft.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network."}], "lastModified": "2026-10-25T18:17:00.280", "sourceIdentifier": "secure@microsoft.com"}