Live › vulnerability › CVE-2021-42287
Go to dashboardMicrosoft Active Directory Domain Services has a privilege escalation flaw that lets an authenticated domain user gain higher privileges. CISA lists it as known exploited, and the sources say it is used in ransomware campaigns.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Microsoft Active Directory | vendor | – | – |
Unknown from the sources.
Apply the Microsoft updates for the vendor advisory for CVE-2021-42287 on all domain controllers, per CISA required action: apply updates per vendor instructions.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Microsoft Active Directory Domain Services contains an unspecified vulnerability that allows for privilege escalation.
CISA required action: Apply updates per vendor instructions.
This page as .md · .json · in your agent: get_signal("CVE-2021-42287")
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