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Case File

CVE-2021-33739

HIGH · CVSS 8.4 EPSS 6.55% CISA KEV · Actively Exploited

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-06-08 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.4. It affects Microsoft. 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: 2021-11-03

Required action: Apply updates per vendor instructions.

CVE
CVE-2021-33739
Severity
HIGH
CVSS
8.4
EPSS
6.55%
Microsoft

Original NVD Description

Microsoft DWM Core Library Elevation of Privilege Vulnerability

Related CVEs

Other vulnerabilities affecting the same vendor(s)