CVE-2019-0721
Status: ModifiedCritical (9.1)—
A remote code execution vulnerability exists when Windows Hyper-V Network Switch on a host server fails to properly validate input from an authenticated user on a guest operating system, aka 'Hyper-V Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-0719.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Base score: 9.1
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 12%
- Percentile among all scored CVEs: 96
- Score date: 10/17/2026
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-2019-0721",
"cveTags": [],
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"affectedData": [
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"vendor": "Microsoft",
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"published": "2019-11-12T19:15:11.177",
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"tags": [
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"lang": "en",
"value": "A remote code execution vulnerability exists when Windows Hyper-V Network Switch on a host server fails to properly validate input from an authenticated user on a guest operating system, aka 'Hyper-V Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-0719."
},
{
"lang": "es",
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}
],
"lastModified": "2026-06-17T02:08:46.327",
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