Advisory Published
Updated

CVE-2021-33765: Windows Installer Spoofing Vulnerability

First published: Wed Jul 14 2021(Updated: )

Windows Installer Spoofing Vulnerability

Credit: secure@microsoft.com

Affected SoftwareAffected VersionHow to fix
Windows 10
Windows 10=20h2
Windows 10=21h1
Windows 10=1607
Windows 10=1809
Windows 10=1909
Windows 10=2004
Microsoft Windows 7=sp1
Microsoft Windows
Microsoft Windows RT
Microsoft Windows Server=sp1
Microsoft Windows Server=sp2
Microsoft Windows Server
Microsoft Windows Server=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2016=20h2
Microsoft Windows Server 2016=2004
Microsoft Windows Server 2019

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Frequently Asked Questions

  • What is the severity of CVE-2021-33765?

    The severity of CVE-2021-33765 is rated as Important by Microsoft.

  • Is there a workaround for CVE-2021-33765?

    Yes, disabling the Windows Installer service can mitigate the risk of CVE-2021-33765 until a patch is applied.

  • How do I fix CVE-2021-33765?

    To fix CVE-2021-33765, apply the security update released by Microsoft for the affected Windows versions.

  • Which Windows versions are affected by CVE-2021-33765?

    CVE-2021-33765 affects multiple versions of Windows, including Windows 7, Windows 10, Windows Server 2008, and later versions.

  • Can exploiting CVE-2021-33765 allow unauthorized access?

    Yes, exploiting CVE-2021-33765 can allow an attacker to execute code with elevated privileges, leading to unauthorized access.

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