Improper input validation in Microsoft Windows 10
CVE-2018-8438
A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server fails to properly validate input from a privileged user on a guest operating system, aka "Windows Hyper-V Denial of Service Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8436, CVE-2018-8437.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.072 (94.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.072 · newest: 0.072 · change: 0.000
Affected products
- Microsoft Windows 10 — versions 32-bit Systems, Version 1607 for 32-bit Systems, Version 1607 for x64-based Systems
- Microsoft Windows 10 — versions 1607, 1709, 1803
- Microsoft Windows 10 Servers — versions version 1709 (Server Core Installation), version 1803 (Server Core Installation)
- Microsoft Windows 8.1 — versions 32-bit systems, x64-based systems
- Microsoft Windows 8.1
- Microsoft Windows Rt 8.1 — versions Windows RT 8.1
- Microsoft Windows Server — versions 2012
- Microsoft Windows Server 2012 R2 — versions (Server Core installation)
- Microsoft Windows Server 2016 — versions (Server Core installation)
- Microsoft Windows Server 2016 — versions 1709, 1803
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/105249 (VDB Entry, Third Party Advisory, vdb-entry)
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8438 (Patch, Vendor Advisory)
- www.securitytracker.com/id/1041624 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-8438?
- CVE-2018-8438 is a medium-severity vulnerability in Microsoft Windows 10, classified under Improper Input Validation. CVSS score: 6.8/10. Published 2018-09-13.
- How severe is CVE-2018-8438?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2018-8438 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.