CVE-2019-0859 | BDVDB-2026-115016 Detail

MicrosoftWindows

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

No weakness recorded in the source data.

References#

Exploit#

No public exploit known

History#

Version 12019-04-09Record published in the CVE List.
Version 22025-10-21Most recent update recorded in the CVE List.

Published

Published: 2019-04-09
Last modified: 2025-10-21

Vendor information

Vendor: Microsoft
Product: Windows

All Microsoft vulnerabilities

Score

7.8 High

EPSS

4.1%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 91.0.

KEV

Yes

Listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

Apply updates per vendor instructions.

Affected Systems

Vulnerable
7 for 32-bit Systems Service Pack 1
Fixed
Not stated
Vulnerable
7 for x64-based Systems Service Pack 1
Fixed
Not stated
Vulnerable
8.1 for 32-bit systems
Fixed
Not stated
Vulnerable
8.1 for x64-based systems
Fixed
Not stated
Vulnerable
RT 8.1
Fixed
Not stated
Vulnerable
10 for 32-bit Systems
Fixed
Not stated
Vulnerable
10 for x64-based Systems
Fixed
Not stated
Vulnerable
10 Version 1607 for 32-bit Systems
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.8 High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).