CVE-2021-41357

7.8

HIGHCVSS v3.1 Base Score

4.20%

LOW RiskEPSS (89th percentile)

KEV

NVD-CWE-noinfo

Win32k Elevation of Privilege Vulnerability

Published: 10/13/2021

Modified: 10/30/2025

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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Microsoft Win32k Privilege Escalation Vulnerability

Vendor / Product:

Microsoft Win32k

Required Action:

Apply updates per vendor instructions.

Due Date: 5/16/2022(OVERDUE)

Added to KEV:

4/25/2022

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2021-41357

View CISA KEV Catalog

Vulnerability Summary

CVSS v3 Score

7.8HIGH

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

CVSS v2 Score

4.6

AV:L/AC:L/Au:N/C:P/I:P/A:P

EPSS Score (Exploitation Probability)

4.20%LOW Exploitation Risk

89th percentile

This vulnerability has a 4.20% probability of being exploited in the next 30 days, ranking higher than 89% of all scored CVEs.

CWE Classification

NVD-CWE-noinfo

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