CVE-2019-0717
Status: ModifiedMedium (5.8)—
A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server fails to properly validate input from a privileged user on a guest operating system. An attacker who successfully exploited the vulnerability could cause the host server to crash. To exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application that causes a host machine to crash. The update addresses the vulnerability by modifying how virtual machines access the Hyper-V Network Switch.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H
- Base score: 5.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 5.10%
- Percentile among all scored CVEs: 92
- Score date: 10/18/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (3)
CWEs
- CWE-20
References
Raw JSON (NVD)
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{
"id": "CVE-2019-0717",
"cveTags": [],
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"vectorString": "AV:A/AC:L/Au:S/C:N/I:N/A:C",
"authentication": "SINGLE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "NONE"
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"acInsufInfo": false,
"impactScore": 6.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 5.1,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
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"cvssMetricV31": [
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"userInteraction": "NONE",
"attackComplexity": "HIGH",
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"affected": [
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"affectedData": [
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"cpes": [
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],
"vendor": "Microsoft",
"product": "Windows 10 Version 1809",
"versions": [
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{
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"published": "2019-08-14T21:15:12.783",
"references": [
{
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0717",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "secure@microsoft.com"
},
{
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0717",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-20"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server fails to properly validate input from a privileged user on a guest operating system. An attacker who successfully exploited the vulnerability could cause the host server to crash.\nTo exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application that causes a host machine to crash.\nThe update addresses the vulnerability by modifying how virtual machines access the Hyper-V Network Switch."
},
{
"lang": "es",
"value": "Existe una vulnerabilidad de denegación de servicio cuando Microsoft Hyper-V Network Switch en un servidor host no puede comprobar apropiadamente la entrada de un usuario con privilegios en un sistema operativo invitado, también se conoce como \"Windows Hyper-V Denial of Service Vulnerability\". El ID de este CVE es diferente de CVE-2019-0714, CVE-2019-0715, CVE-2019-0718, CVE-2019-0723."
}
],
"lastModified": "2026-06-17T02:08:45.733",
"configurations": [
{
"nodes": [
{
"negate": false,
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{
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"operator": "OR"
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"sourceIdentifier": "secure@microsoft.com"
}