CVE-2020-0909
Status: ModifiedHigh (7.5)—
A denial of service vulnerability exists when Hyper-V on a Windows Server fails to properly handle specially crafted network packets. To exploit the vulnerability, an attacker would send specially crafted network packets to the Hyper-V Server. The security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to properly handle these network packets.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Base score: 7.5
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 4.69%
- Percentile among all scored CVEs: 92
- Score date: 10/8/2026
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 (7)
CWEs
- NVD-CWE-noinfo
References
Raw JSON (NVD)
Show
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"published": "2020-05-21T23:15:11.273",
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-0909",
"source": "secure@microsoft.com"
},
{
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0909",
"tags": [
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"source": "af854a3a-2127-422b-91ae-364da2661108"
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"value": "A denial of service vulnerability exists when Hyper-V on a Windows Server fails to properly handle specially crafted network packets.\nTo exploit the vulnerability, an attacker would send specially crafted network packets to the Hyper-V Server.\nThe security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to properly handle these network packets."
},
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"value": "Existe una vulnerabilidad de denegación de servicio cuando Hyper-V en un Windows Server falla al manejar apropiadamente paquetes de red especialmente diseñados. Para explotar la vulnerabilidad, un atacante enviaría paquetes de red especialmente diseñados hacia el Hyper-V Server. La actualización de seguridad aborda la vulnerabilidad al resolver las condiciones en las que Hyper-V presentaría un fallo al manejar apropiadamente estos paquetes de red., también se conoce como 'Windows Hyper-V Denial of Service Vulnerability'."
}
],
"lastModified": "2026-08-19T17:17:07.417",
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