PULSEUnderground Intel

LIVE35signals / 24h

FEED

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CVE Watch—

CVE-2021-40449

Microsoft Windows Win32k Privilege Escalation Vulnerability

CVSS

—

No CVSS

EPSS

74.1%

p99

KEV

YES

Nov 17, 2021

Exploit Today

80

0-100

Published: — · Last modified: —

EPSS · 30d

74.1%EPSS · 30 days74.1%

2026-09-172026-10-14

KEV catalog record

Product

Microsoft / Windows

Vulnerability

Microsoft Windows Win32k Privilege Escalation Vulnerability

Added to KEV

Nov 17, 2021

Remediate by

Dec 1, 2021

Known ransomware use

Yes

Summary description

Unspecified vulnerability allows for an authenticated user to escalate privileges.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2021-40449

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