CVE-2019-0859

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.042 · 91 %ileexploit · PoCEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 1 exploit · PoC

Likely / severe?

4.15% (91st) EPSS

CVSS 7.2 · high

Is it mine?

78 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 Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0685, CVE-2019-0803.

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

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

v3.17.8highAV:L/AC:L/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:Hsecondary · ENISA EU

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

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

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-264US

exploits (1)

Public proof-of-concept and weaponised exploit code.

Sheisback/CVE-2019-0859-1day-ExploitCVE-2019-0859 1day ExploitPoC · poc_in_github

affected products (78)

Products and version ranges known to be affected.

Microsoft Windows≤ 10 Version 1703 for 32-bit Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1607 for x64-based Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1803 for 32-bit Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1803 for ARM64-based Systemsenisa_euvdEU
Microsoft Windows≤ 7 for x64-based Systems Service Pack 1enisa_euvdEU
Microsoft Windows≤ 10 Version 1709 for x64-based Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1703 for x64-based Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1607 for 32-bit Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1709 for 32-bit Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1803 for x64-based Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1709 for ARM64-based Systemsenisa_euvdEU
Microsoft Windows≤ 8.1 for 32-bit systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1809 for x64-based Systemsenisa_euvdEU
Microsoft Windows≤ 7 for 32-bit Systems Service Pack 1enisa_euvdEU
Microsoft Windows≤ 10 Version 1809 for ARM64-based Systemsenisa_euvdEU
Microsoft Windows≤ 10 Version 1809 for 32-bit Systemsenisa_euvdEU
Microsoft Windows≤ RT 8.1enisa_euvdEU
Microsoft Windows≤ 10 for x64-based Systemsenisa_euvdEU
Microsoft Windows≤ 10 for 32-bit Systemsenisa_euvdEU
Microsoft Windows≤ 8.1 for x64-based systemsenisa_euvdEU

showing 20 of 78

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 2019-04-09modified 2026-06-17

references (12)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan