Advisory Published
Updated

CVE-2021-41338: Windows AppContainer Firewall Rules Security Feature Bypass Vulnerability

First published: Wed Oct 13 2021(Updated: )

Windows AppContainer Firewall Rules Security Feature Bypass 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
Windows 11
Windows 11
Microsoft Windows Server 2016
Microsoft Windows Server 2016=20h2
Microsoft Windows Server 2016=2004
Microsoft Windows Server 2019
Microsoft Windows Server 2022

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Frequently Asked Questions

  • What is the severity of CVE-2021-41338?

    CVE-2021-41338 has a severity rating of important, indicating a significant potential impact on affected systems.

  • How do I fix CVE-2021-41338?

    To fix CVE-2021-41338, ensure your system is updated with the latest security patches provided by Microsoft.

  • What software versions are affected by CVE-2021-41338?

    CVE-2021-41338 affects multiple Microsoft Windows versions including Windows 10, Windows Server 2016, 2019, 2022, and Windows 11.

  • What are the potential consequences of CVE-2021-41338?

    Exploitation of CVE-2021-41338 can allow attackers to bypass AppContainer Firewall rules, leading to unauthorized access.

  • Is there a workaround for CVE-2021-41338?

    Currently, the recommended action for CVE-2021-41338 is to apply the security updates rather than relying on workarounds.

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