CVE-2020-1203

Local privilege escalation via collector memory mishandling

Published Jun 9, 2020 · Updated Aug 4, 2024

Memory-handling errors in Microsoft Windows and Visual Studio collectors allow local users to elevate privileges on affected systems. The Diagnostics Hub Standard Collector and Visual Studio Standard Collector improperly handle objects in memory; Microsoft has not disclosed the object type or incorrect operation. A low-privileged local account is required, and successful exploitation grants elevated access on the affected host.

CVSS severity7.8
High
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory-handling errors in Microsoft Windows and Visual Studio collectors allow local users to elevate privileges on affected systems. The Diagnostics Hub Standard Collector and Visual Studio Standard Collector improperly handle objects in memory; Microsoft has not disclosed the object type or incorrect operation. A low-privileged local account is required, and successful exploitation grants elevated access on the affected host.

The record

CVE
CVE-2020-1203
Published
Jun 9, 2020
Updated
Aug 4, 2024
Vendor
Microsoft
Product
Microsoft Visual Studio 2019
Classifications
CWE-269, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 9, 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=16.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft Visual Studio 2019version=16.0
Microsoft · Windows 10 Version 1909version=unspecified
Microsoft · Microsoft Visual Studioversion=2015 Update 3
Microsoft · Windows Server, version 1903 (Server Core installation)version=unspecified
Microsoft · Windowsversion=10 for 32-bit Systems; version=10 for x64-based Systems; version=10 Version 1607 for 32-bit Systems; version=10 Version 1607 for x64-based Systems; version=10 Version 1709 for 32-bit Systems; version=10 Version 1709 for ARM64-based Systems; version=10 Version 1709 for x64-based Systems; version=10 Version 1803 for 32-bit Systems; version=10 Version 1803 for ARM64-based Systems; version=10 Version 1803 for x64-based Systems; version=10 Version 1809 for 32-bit Systems; version=10 Version 1809 for ARM64-based Systems; version=10 Version 1809 for x64-based Systems
Microsoft · Microsoft Visual Studio 2019 version 16.4version=unspecified
Microsoft · Microsoft Visual Studio 2017version=unspecified
Microsoft · Windows 10 Version 2004version=unspecified
Microsoft · Microsoft Visual Studio 2019 version 16.6version=unspecified
Microsoft · Windows Server, version 2004 (Server Core installation)version=unspecified
Microsoft · Windows Serverversion=2016; version=2016 (Core installation); version=2019; version=2019 (Core installation); version=version 1803 (Core Installation)
Microsoft · Windows Server, version 1909 (Server Core installation)version=unspecified
Microsoft · Windows 10 Version 1903version=unspecified

Published CVSS scores

7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1068Exploitation for Privilege Escalation

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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