---
id: CVE-2020-1135
title: >-
  An elevation of privilege vulnerability exists when the Windows Graphics
  Component improperly handles objects in memory
summary: >-
  An elevation of privilege vulnerability exists when the Windows Graphics
  Component improperly handles objects in memory. An attacker who successfully
  exploited this vulnerability could run processes in an elevated context.

  In a local att…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: microsoft
product: windows_10
affected:
  - windows_10 = 1709
  - windows_10 = 1803
  - windows_10 = 1809
  - windows_10 = 1903
  - windows_10 = 1909
  - windows_server_2016 = 1803
  - windows_server_2016 = 1903
  - windows_server_2016 = 1909
  - windows_server_2019
published: '2020-05-21'
updated: '2026-08-19'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-1135'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1135'
    label: secure@microsoft.com
  - url: >-
      https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1135
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00972
epssPercentile: 0.60519
ingestedAt: '2026-08-19T17:42:38.909Z'
---

## Overview

An elevation of privilege vulnerability exists when the Windows Graphics Component improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context.
In a local attack scenario, an attacker could exploit this vulnerability by running a specially crafted application to take control over the affected system.
The update addresses the vulnerability by correcting the way in which the Microsoft Graphics Component handles objects in memory and preventing unintended elevation from user mode.

## Affected

- `windows_10 = 1709`
- `windows_10 = 1803`
- `windows_10 = 1809`
- `windows_10 = 1903`
- `windows_10 = 1909`
- `windows_server_2016 = 1803`
- `windows_server_2016 = 1903`
- `windows_server_2016 = 1909`
- `windows_server_2019`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.