CVE-2020-0617

Host crash via unvalidated guest Virtual PCI input

Published Jan 14, 2020 · Updated Aug 4, 2024

Denial of service in Microsoft Hyper-V Virtual PCI on affected Windows hosts allows privileged guest OS users to crash the host. The host-side Virtual PCI component processes privileged guest input without proper validation; Microsoft has not disclosed the specific field or routine. Exploitation requires high privileges inside a guest on a Hyper-V host and interrupts host availability, with no reported data disclosure or modification.

CVSS severity6.0
Medium
EPSS probability1.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Microsoft Hyper-V Virtual PCI on affected Windows hosts allows privileged guest OS users to crash the host. The host-side Virtual PCI component processes privileged guest input without proper validation; Microsoft has not disclosed the specific field or routine. Exploitation requires high privileges inside a guest on a Hyper-V host and interrupts host availability, with no reported data disclosure or modification.

The record

CVE
CVE-2020-0617
Published
Jan 14, 2020
Updated
Aug 4, 2024
Vendor
Microsoft
Product
Windows
Classifications
CWE-20, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jan 14, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10 for x64-based Systems
  2. Affected versionversion=10 Version 1607 for x64-based Systems
  3. Affected versionversion=10 Version 1709 for x64-based Systems
  4. Affected versionversion=10 Version 1803 for x64-based Systems
  5. Affected versionversion=10 Version 1809 for x64-based Systems

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Microsoft · Windowsversion=10 for x64-based Systems; version=10 Version 1607 for x64-based Systems; version=10 Version 1709 for x64-based Systems; version=10 Version 1803 for x64-based Systems; version=10 Version 1809 for x64-based Systems
Microsoft · Windows Serverversion=2016; version=2016 (Core installation); version=2019; version=2019 (Core installation); version=version 1803 (Core Installation)

Published CVSS scores

4.9NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:C
6.0NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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