PULSE
LIVE0signals / 24h
ES
FEED
vulnKEV agrega CVE-2023-49105 — ownCloud / ownCloudvulnKEV agrega CVE-2026-53362 — Linux / KernelvulnKEV agrega CVE-2026-66384 — JFrog / ArtifactoryvulnKEV agrega CVE-2021-23758 — Ajax.NET Professional / Ajax.NET ProfessionalvulnKEV agrega CVE-2015-3246 — Red Hat / LibuservulnKEV agrega CVE-2015-5287 — Red Hat / Automatic Bug Reporting ToolvulnKEV agrega CVE-2022-0995 — Linux / KernelvulnKEV agrega CVE-2026-8452 — Citrix / NetScaler ADC and NetScaler GatewayvulnKEV agrega CVE-2019-1068 — Microsoft / SQL ServervulnKEV agrega CVE-2026-60004 — Gitea / GiteavulnKEV agrega CVE-2026-21962 — Oracle / HTTP Server and Oracle Weblogic Server Proxy Plug-invulnKEV agrega CVE-2026-73570 — Synacor / Zimbra Collaboration Suite (ZCS)vulnKEV agrega CVE-2026-72530 — TrueConf / ServervulnKEV agrega CVE-2026-72529 — TrueConf / ServervulnKEV agrega CVE-2023-49105 — ownCloud / ownCloudvulnKEV agrega CVE-2026-53362 — Linux / KernelvulnKEV agrega CVE-2026-66384 — JFrog / ArtifactoryvulnKEV agrega CVE-2021-23758 — Ajax.NET Professional / Ajax.NET ProfessionalvulnKEV agrega CVE-2015-3246 — Red Hat / LibuservulnKEV agrega CVE-2015-5287 — Red Hat / Automatic Bug Reporting ToolvulnKEV agrega CVE-2022-0995 — Linux / KernelvulnKEV agrega CVE-2026-8452 — Citrix / NetScaler ADC and NetScaler GatewayvulnKEV agrega CVE-2019-1068 — Microsoft / SQL ServervulnKEV agrega CVE-2026-60004 — Gitea / GiteavulnKEV agrega CVE-2026-21962 — Oracle / HTTP Server and Oracle Weblogic Server Proxy Plug-invulnKEV agrega CVE-2026-73570 — Synacor / Zimbra Collaboration Suite (ZCS)vulnKEV agrega CVE-2026-72530 — TrueConf / ServervulnKEV agrega CVE-2026-72529 — TrueConf / Server
← All CVEs
CVE WatchAug 19, 2026

CVE-2021-42278

Microsoft Active Directory Domain Services Privilege Escalation Vulnerability

CVSS

7.5

High

EPSS

72.0%

p99

KEV

YES

Apr 11, 2022

Exploit Today

80

0-100

Published: Nov 10, 2021 · Last modified: Aug 19, 2026

EPSS · 30d
70.2%EPSS · 30 days72.0%
2026-08-022026-08-31
KEV catalog record

Product

Microsoft / Active Directory

Vulnerability

Microsoft Active Directory Domain Services Privilege Escalation Vulnerability

Added to KEV

Apr 11, 2022

Remediate by

May 2, 2022

Known ransomware use

Yes

Summary description

Microsoft Active Directory Domain Services contains an unspecified vulnerability that allows for privilege escalation.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2021-42278

Technical description

Active Directory Domain Services Elevation of Privilege Vulnerability

Official references
Related CVEs
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2021-422877.5 HIG
99.5%
KEV—80Microsoft Active Directory Domain Services Privilege Escalation Vulnerability12dCVE-2022-26923—
99.7%
KEV—80Microsoft Active Directory Domain Services Privilege Escalation Vulnerability—