CVE-2019-0709
Status: ModifiedHigh (7.6)—💥 PoC
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. An attacker who successfully exploited the vulnerability could execute arbitrary code on the host operating system. The security update addresses the vulnerability by correcting how Hyper-V validates guest operating system user input.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
- Base score: 7.6
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 4.04%
- Percentile among all scored CVEs: 90
- 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).
💥 Public exploits
Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.
- Proof of concept on GitHub (unverified) · List of proofs of concept on GitHub
⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.
Affected technologies (2)
CWEs
- CWE-20
References
Raw JSON (NVD)
Show
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"published": "2019-06-12T14:29:01.150",
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"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-0709",
"source": "secure@microsoft.com"
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{
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0709",
"tags": [
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"value": "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.\nAn attacker who successfully exploited the vulnerability could execute arbitrary code on the host operating system.\nThe security update addresses the vulnerability by correcting how Hyper-V validates guest operating system user input."
},
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}
],
"lastModified": "2026-06-17T02:08:44.357",
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