CVE-2020-1054

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.539 · 99 %ileexploit · functionalEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 5 exploits · functional

Likely / severe?

53.9% (99th) EPSS

CVSS 7.2 · high

Is it mine?

87 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · fstec_bdu

added 2021-11-03remediate by 2022-05-03

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-27

Microsoft Win32k Privilege Escalation Vulnerability

An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The update addresses this vulnerability by correcting how the Windows kernel-mode driver handles objects in memory.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.2highAV:L/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 10

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · secure@microsoft.com USexploitability 1 · impact 5.9

v3.17highAV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 1.8 · impact 5.9

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · NVD / NIST USexploitability 1.8 · impact 5.9

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-269US

exploits (5)

Public proof-of-concept and weaponised exploit code.

exploit/windows/local/cve_2020_1054_drawiconex_lpeMicrosoft Windows DrawIconEx OOB Write Local Privilege Elevationfunctional · metasploit
0xeb-bp/cve-2020-1054LPE for CVE-2020-1054 targeting Windows 7 x64PoC · poc_in_github
Graham382/CVE-2020-1054Windows 7 LPEPoC · poc_in_github
Iamgublin/CVE-2020-1054Iamgublin/CVE-2020-1054PoC · poc_in_github
KaLendsi/CVE-2020-1054KaLendsi/CVE-2020-1054PoC · poc_in_github

affected products (87)

Products and version ranges known to be affected.

Microsoft Windows≤ 7 for 32-bit Systems Service Pack 1enisa_euvdEU
Microsoft Windows≤ 10 Version 1607 for x64-based Systemsenisa_euvdEU
Microsoft Windows≤ 7 for x64-based Systems Service Pack 1enisa_euvdEU
Microsoft Windows≤ 10 Version 1809 for x64-based Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1607 for 32-bit Systemsenisa_euvdEU
Microsoft Windows≤ 10 for x64-based Systemsenisa_euvdEU
Microsoft Windows≤ 8.1 for 32-bit systemsenisa_euvdEU
Microsoft Windows≤ RT 8.1enisa_euvdEU
Microsoft Windows≤ 8.1 for x64-based systemsenisa_euvdEU
Microsoft Windows≤ 10 for 32-bit Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1709 for ARM64-based Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1803 for ARM64-based Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1709 for 32-bit Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1709 for x64-based Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1803 for 32-bit Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1809 for ARM64-based Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1809 for 32-bit Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1803 for x64-based Systemsenisa_euvdEU
Microsoft Windows 10 Version 1903 for 32-bit Systems≤ unspecifiedenisa_euvdEU
Microsoft Windows 10 Version 1903 for ARM64-based Systems≤ unspecifiedenisa_euvdEU

showing 20 of 87

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu NVD CVE.org MITRE

published 2020-05-21modified 2026-08-19

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+16120 more

references (12)

External citations — patches, advisories, analysis.

scry

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