CVE-2020-0792

SYSTEM code execution via unchecked heap copy

Published Feb 11, 2020 · Updated Aug 4, 2024

Heap-based buffer overflow in Microsoft Windows Graphics Component allows local users to execute code as SYSTEM via crafted data. NtUserResolveDesktopForWOW copies user-supplied data into a heap buffer without first validating its length, permitting an out-of-bounds write. Exploitation requires low-privileged code execution on the target, after which the process gains SYSTEM-level control over data and system operation.

CVSS severity8.8
High
EPSS probability1.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Microsoft Windows Graphics Component allows local users to execute code as SYSTEM via crafted data. NtUserResolveDesktopForWOW copies user-supplied data into a heap buffer without first validating its length, permitting an out-of-bounds write. Exploitation requires low-privileged code execution on the target, after which the process gains SYSTEM-level control over data and system operation.

The record

CVE
CVE-2020-0792
Published
Feb 11, 2020
Updated
Aug 4, 2024
Vendor
Microsoft
Product
Windows 10 Version 1909
Classifications
CWE-787, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 11, 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?

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  1. Affected versionversion=unspecified

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows 10 Version 1909version=unspecified
Microsoft · Windows Server, version 1903 (Server Core installation)version=unspecified
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
8.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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.

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

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-787Out-of-bounds Write
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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