Vulnerability in Microsoft Windows 10
CVE-2020-1243
<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>
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Microsoft Windows 10 — versions 1607, 1709, 1803
- Microsoft Windows 10 Version 1607 — versions 10.0.0
- Microsoft Windows 10 Version 1709 — versions 10.0.0
- Microsoft Windows 10 Version 1803 — versions 10.0.0
- Microsoft Windows 10 Version 1809 — versions 10.0.0
- Microsoft Windows 10 Version 1903 For X64-Based Systems — versions 10.0.0
- Microsoft Windows 10 Version 1909 — versions 10.0.0
- Microsoft Windows 10 Version 2004 — versions 10.0.0
- Microsoft Windows Server 2016 — versions 10.0.0
- Microsoft Windows Server 2016 — versions 1903, 1909, 2004
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1243 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-1243?
- CVE-2020-1243 is a high-severity vulnerability in Microsoft Windows 10. CVSS score: 7.8/10. Published 2020-10-16.
- How severe is CVE-2020-1243?
- High severity. CVSS v3 base score is 7.8 out of 10.