AUGUST 4, 2026
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Case File

CVE-2021-40450

HIGH · CVSS 7.8 EPSS 1.97% CISA KEV · Actively Exploited

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-10-13 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.8. It is listed in CISA's Known Exploited Vulnerabilities catalog, indicating confirmed active exploitation in the wild.

CISA KEV Details

Status: This CVE is listed in CISA's Known Exploited Vulnerabilities catalog.

Ransomware use: Unknown

Added to KEV: 2022-04-25

Required action: Apply updates per vendor instructions.

CVE
CVE-2021-40450
Severity
HIGH
CVSS
7.8
EPSS
1.97%

Original NVD Description

Win32k Elevation of Privilege Vulnerability

Related CVEs

Other vulnerabilities affecting the same vendor(s)