CVE-2020-16891 (GCVE-0-2020-16891)
Vulnerability from cvelistv5 – Published: 2020-10-16 22:17 – Updated: 2024-08-04 13:45
VLAI
EPSS
VEX
Title
Windows Hyper-V Remote Code Execution Vulnerability
Summary
<p>A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate input from an authenticated user on a guest operating system. To exploit the vulnerability, an attacker could run a specially crafted application on a guest operating system that could cause the Hyper-V host operating system to execute arbitrary code.</p>
<p>An attacker who successfully exploited the vulnerability could execute arbitrary code on the host operating system.</p>
<p>The security update addresses the vulnerability by correcting how Hyper-V validates guest operating system user input.</p>
Severity
CWE
- Remote Code Execution
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://portal.msrc.microsoft.com/en-US/security-… | x_refsource_MISC |
Impacted products
25 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 2004 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* |
||
| Microsoft | Windows Server version 2004 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:* |
||
| Microsoft | Windows 10 Version 1803 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10_1803:*:*:*:*:*:*:x64:* |
||
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* |
||
| Microsoft | Windows Server 2019 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* |
||
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* |
||
| Microsoft | Windows 10 Version 1909 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x64:* |
||
| Microsoft | Windows Server, version 1909 (Server Core installation) |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_1909:*:*:*:*:*:*:*:* |
||
| Microsoft | Windows 10 Version 1709 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* |
||
| Microsoft | Windows 10 Version 1903 for x64-based Systems |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* |
||
| Microsoft | Windows Server, version 1903 (Server Core installation) |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_1903:*:*:*:*:*:*:*:* |
||
| Microsoft | Windows 10 Version 1507 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:* |
||
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* |
||
| Microsoft | Windows Server 2016 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* |
||
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* |
||
| Microsoft | Windows 7 Service Pack 1 |
Affected:
6.1.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_7:*:sp1:*:*:*:*:x64:* |
||
| Microsoft | Windows 8.1 |
Affected:
6.3.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_8.1:*:*:*:*:*:*:x64:* |
||
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2008_sp2:*:*:*:*:*:*:x86:* |
||
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) |
Affected:
6.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2008_sp2:*:*:*:*:*:*:x86:* |
||
| Microsoft | Windows Server 2008 R2 Service Pack 1 |
Affected:
6.1.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2008_R2:*:*:*:*:*:*:x64:* |
||
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) |
Affected:
6.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2008_R2:*:*:*:*:*:*:x64:* |
||
| Microsoft | Windows Server 2012 |
Affected:
6.2.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:* |
||
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:* |
||
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:* |
||
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:* |
Date Public
2020-10-13 07:00
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "\u003cp\u003eA remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate input from an authenticated user on a guest operating system. To exploit the vulnerability, an attacker could run a specially crafted application on a guest operating system that could cause the Hyper-V host operating system to execute arbitrary code.\u003c/p\u003e\n\u003cp\u003eAn attacker who successfully exploited the vulnerability could execute arbitrary code on the host operating system.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Hyper-V validates guest operating system user input.\u003c/p\u003e"
},
{
"lang": "es",
"value": "Se presenta una vulnerabilidad de ejecuci\u00f3n de c\u00f3digo remota cuando Windows Hyper-V en un servidor host presenta un fallo al comprobar apropiadamente la entrada de un usuario autenticado en un sistema operativo invitado, tambi\u00e9n se conoce como \"Windows Hyper-V Remote Code Execution Vulnerability\""
}
],
"id": "CVE-2020-16891",
"lastModified": "2026-02-23T18:21:17.283",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.2,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.0,
"impactScore": 6.0,
"source": "secure@microsoft.com",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.0,
"impactScore": 6.0,
"source": "nvd@nist.gov",
"type": "Secondary"
}
]
},
"published": "2020-10-16T23:15:13.040",
"references": [
{
"source": "secure@microsoft.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16891"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16891"
}
],
"sourceIdentifier": "secure@microsoft.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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