Microsoft Active Directory Domain Services Privilege Escalation Vulnerability

ALTO 7.5EXPLOITED (CISA KEV)CVE-2021-42278 · Published 10/11/2021 · updated 19/08/2026

Microsoft Active Directory Domain Services Privilege Escalation Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 11/04/2022. Patch affected systems as an emergency. It is known to be used in ransomware campaigns.

In breve

CVE-2021-42278 è una vulnerabilità ALTO (CVSS 7.5).
Sfruttata attivamente: la CISA l'ha aggiunta al catalogo KEV il 11/04/2022.
Probabilità di sfruttamento nei prossimi 30 giorni (EPSS): 73.3%, superiore al 99.5% delle vulnerabilità.
Nessuna versione corretta ancora nota: segui l'avviso del produttore nei riferimenti.

Package	Affected versions	Patched versions
Active Directory Microsoft	Versions not published yet (product named by CISA KEV)

Description

Active Directory Domain Services Elevation of Privilege Vulnerability

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42278 · Patch
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42278 · Patch
cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
CISA KEV · CVE-2021-42278

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