Microsoft Windows Installer Privilege Escalation Vulnerability

MITTEL 5.5EXPLOITED (CISA KEV)CVE-2021-41379 · Published 10/11/2021 · updated 19/08/2026

Microsoft Windows Installer Privilege Escalation Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 03/03/2022. Patch affected systems as an emergency. It is known to be used in ransomware campaigns.

Kurz gesagt

CVE-2021-41379 ist eine Schwachstelle (MITTEL (CVSS 5.5)).
Wird aktiv ausgenutzt: CISA hat sie am 03/03/2022 in den KEV-Katalog aufgenommen.
Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 19.5%, höher als bei 97.4% aller Schwachstellen.
Noch keine gepatchte Version bekannt: Herstellerhinweise unter Referenzen verfolgen.

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

Description

Windows Installer Elevation of Privilege Vulnerability

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2021-41379 · Patch
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41379 · Patch
zerodayinitiative.com/advisories/ZDI-21-1308 · Third Party Advisory
cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
CISA KEV · CVE-2021-41379

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