VULNERABILITY INTELLIGENCE

CVE-2020-1243

CVSS score7.8 HIGH
EPSS probability0.90%
CISA KEVNot currently listed
Published2020-10-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

<p>A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate specific malicious data from a user on a guest operating system.</p> <p>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.</p> <p>The security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to handle these requests.</p>

Weakness classification

  • nvd@nist.gov: NVD-CWE-noinfo

Primary references