CVE Watch—

CVE-2019-0803

Microsoft Win32k Privilege Escalation Vulnerability

CVSS

—

No CVSS

EPSS

45.2%

p99

KEV

YES

Nov 3, 2021

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

45.0%EPSS · 30 days45.2%

2026-09-162026-10-14

KEV catalog record

Product

Microsoft / Win32k

Vulnerability

Microsoft Win32k Privilege Escalation Vulnerability

Added to KEV

Nov 3, 2021

Remediate by

May 3, 2022

Known ransomware use

Yes

Summary description

Microsoft Win32k contains an unspecified vulnerability due to it failing to properly handle objects in memory causing privilege escalation. Successful exploitation allows an attacker to run code in kernel mode.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2019-0803

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