Exploited
high
7.8
CWE
416
Advisory Published
Updated

CVE-2021-40449: Microsoft Windows Win32k Privilege Escalation Vulnerability

First published: Wed Oct 13 2021(Updated: )

Unspecified vulnerability allows for an authenticated user to escalate privileges.

Credit: secure@microsoft.com secure@microsoft.com secure@microsoft.com

Affected SoftwareAffected VersionHow to fix
Microsoft Windows 10
Microsoft Windows 10=20h2
Microsoft Windows 10=21h1
Microsoft Windows 10=1607
Microsoft Windows 10=1809
Microsoft Windows 10=1909
Microsoft Windows 10=2004
Microsoft Windows 11
Microsoft Windows 7=sp1
Microsoft Windows 8.1
Microsoft Windows RT 8.1
Microsoft Windows Server=20h2
Microsoft Windows Server 2008=sp2
Microsoft Windows Server 2008=r2-sp1
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2016=2004
Microsoft Windows Server 2019
Microsoft Windows Server 2022
Microsoft Windows 10 1507<10.0.10240.19086
Microsoft Windows 10 1607<10.0.14393.4704
Microsoft Windows 10 1809<10.0.17763.2237
Microsoft Windows 10 1909<10.0.18363.1854
Microsoft Windows 10 2004<10.0.19041.1288
Microsoft Windows 10 20h2<10.0.19041.1288
Microsoft Windows 10 21h1<10.0.19041.1288
Microsoft Windows 11 21h2<10.0.22000.258
Microsoft Windows Server 2004<10.0.19041.1288
Microsoft Windows Server 2016<10.0.14393.4704
Microsoft Windows Server 2019<10.0.17763.2237
Microsoft Windows Server 2022<10.0.20348.288
Microsoft Windows Server 20h2<10.0.19042.1288
Microsoft Windows
<10.0.10240.19086
<10.0.14393.4704
<10.0.17763.2237
<10.0.18363.1854
<10.0.19041.1288
<10.0.19041.1288
<10.0.19041.1288
<10.0.22000.258
=sp1
<10.0.19041.1288
=sp2
=r2-sp1
=r2
<10.0.14393.4704
<10.0.17763.2237
<10.0.20348.288
<10.0.19042.1288

Remedy

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40449

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-40449?

    CVE-2021-40449 is a vulnerability in Microsoft Windows that allows an authenticated user to escalate privileges.

  • What software is affected by CVE-2021-40449?

    Microsoft Windows 7, 8.1, 10, 11, Server 2008, 2012, 2016, 2019, and 2022 are affected by CVE-2021-40449.

  • What is the severity of CVE-2021-40449?

    The severity of CVE-2021-40449 is high with a CVSS score of 7.8.

  • How can an attacker exploit CVE-2021-40449?

    Details about the exploitation of CVE-2021-40449 are not publicly available at this time.

  • Are there any patches or mitigations available for CVE-2021-40449?

    Yes, Microsoft has provided patches and mitigations for CVE-2021-40449. It is recommended to apply the latest security updates from Microsoft.

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