AUGUST 4, 2026
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Case File

CVE-2021-42287

HIGH · CVSS 7.5 EPSS 74.27% CISA KEV · Actively Exploited

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-10 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It is listed in CISA's Known Exploited Vulnerabilities catalog, indicating confirmed active exploitation in the wild. Its EPSS score suggests a 74.3% probability of exploitation in the next 30 days.

CISA KEV Details

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

Ransomware use: Known

Added to KEV: 2022-04-11

Required action: Apply updates per vendor instructions.

CVE
CVE-2021-42287
Severity
HIGH
CVSS
7.5
EPSS
74.27%

Original NVD Description

Active Directory Domain Services Elevation of Privilege Vulnerability

Related CVEs

Other vulnerabilities affecting the same vendor(s)