CVE-2026-70197
Full vulnerability record from the local CVENow database.
Description
Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.
Severity
HIGH
CVSS score
8.1
(v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
Published
2026-10-13 19:19:33.790000
Last modified
2026-10-25 18:17:00.280000
View original CVE JSON
{
"id": "CVE-2026-70197",
"sourceIdentifier": "[email protected]",
"published": "2026-10-13T19:19:33.790",
"lastModified": "2026-10-25T18:17:00.280",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Microsoft",
"product": ".NET 10.0 installed on Linux",
"versions": [
{
"version": "10.0.0",
"lessThan": "10.0.403",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 10.0 installed on Mac OS",
"versions": [
{
"version": "10.0.0",
"lessThan": "10.0.403",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 10.0 installed on Windows",
"versions": [
{
"version": "10.0.0",
"lessThan": "10.0.403",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 10.0 runtime",
"versions": [
{
"version": "10.0.0",
"lessThan": "10.0.13",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 11.0 installed on Linux",
"versions": [
{
"version": "11.0.0-preview.1",
"lessThan": "11.0.100-rc.3",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 11.0 installed on Mac OS",
"versions": [
{
"version": "11.0.0-preview.1",
"lessThan": "11.0.100-rc.3",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 11.0 installed on Windows",
"versions": [
{
"version": "11.0.0-preview.1",
"lessThan": "11.0.100-rc.3.26522.148",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 11.0 runtime",
"versions": [
{
"version": "11.0.0",
"lessThan": "11.0.0-rc.2",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 8.0 installed on Linux",
"versions": [
{
"version": "8.0.0",
"lessThan": "8.0.427",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 8.0 installed on Mac OS",
"versions": [
{
"version": "8.0.0",
"lessThan": "8.0.427",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 8.0 installed on Windows",
"versions": [
{
"version": "8.0.0",
"lessThan": "8.0.427",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 8.0 runtime",
"versions": [
{
"version": "8.0.0",
"lessThan": "8.0.32",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 9.0 installed on Linux",
"versions": [
{
"version": "9.0.0",
"lessThan": "9.0.320",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 9.0 installed on Mac OS",
"versions": [
{
"version": "9.0.0",
"lessThan": "9.0.320",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 9.0 installed on Windows",
"versions": [
{
"version": "9.0.0",
"lessThan": "9.0.320",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": ".NET 9.0 runtime",
"versions": [
{
"version": "9.0.0",
"lessThan": "9.0.21",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Visual Studio 2019 version 16.11",
"versions": [
{
"version": "16.11.0",
"lessThan": "16.11.61",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Visual Studio 2022 version 17.14",
"versions": [
{
"version": "17.14.0",
"lessThan": "17.14.43",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Visual Studio 2026 version 18.10",
"versions": [
{
"version": "18.10.0",
"lessThan": "18.10.4",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Visual Studio 2026 version 18.11",
"versions": [
{
"version": "18.11.0",
"lessThan": "18.11.2",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Visual Studio 2026 version 18.12",
"versions": [
{
"version": "18.12.0",
"lessThan": "18.12 Insiders 3",
"versionType": "custom",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.2,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-10-08T00:00:00+00:00",
"id": "CVE-2026-70197",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-787"
}
]
}
],
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70197",
"source": "[email protected]"
}
]
}