CVE-2024-21351: Microsoft Windows SmartScreen Security Feature Bypass Vulnerability

Published Feb 13, 2024
·
Updated

Microsoft Windows SmartScreen contains a security feature bypass vulnerability that allows an attacker to bypass the SmartScreen user experience and inject code to potentially gain code execution, which could lead to some data exposure, lack of system availability, or both.

Other sources

Windows SmartScreen Security Feature Bypass Vulnerability

Microsoft

Affected Software

35 affected componentsFixes available
Microsoft Windows
Microsoft Windows 10 1507<10.0.10240.20469
Microsoft Windows 10 1607<10.0.14393.6709
Microsoft Windows 10 1809<10.0.17763.5458
Microsoft Windows 10 21h2<10.0.19044.4046
Microsoft Windows 10 22h2<10.0.19045.4046
Microsoft Windows 11 21h2<10.0.22000.2777
Microsoft Windows 11 22h2<10.0.22621.3155
Microsoft Windows 11 23h2<10.0.22631.3155
Microsoft Windows Server 2016
Microsoft Windows Server 2019<10.0.17763.5458
Microsoft Windows Server 2022<10.0.20348.2322
Microsoft Windows Server 2022 23h2<10.0.25398.709
Microsoft Windows Server 2016<10.0.14393.6709
10.0.14393.6709
Microsoft Windows 10=22H2
10.0.19045.4046
Microsoft Windows 10=22H2
10.0.19045.4046
Microsoft Windows 10=22H2
10.0.19045.4046
Microsoft Windows 10=1607
10.0.14393.6709
Microsoft Windows 10<10.0.10240.20469
10.0.10240.20469
Microsoft Windows 10<10.0.10240.20469
10.0.10240.20469
Microsoft Windows 11=22H2
10.0.22621.3155
Microsoft Windows 10=1607
10.0.14393.6709
Microsoft Windows 11=22H2
10.0.22621.3155
Microsoft Windows 11=21H2
10.0.22000.2777
Microsoft Windows 10=21H2
10.0.19044.4046
Microsoft Windows Server 2019<10.0.17763.5458
10.0.17763.5458
Microsoft Windows Server 2022<10.0.20348.2322
10.0.20348.2322
Microsoft Windows 10=21H2
10.0.19044.4046
Microsoft Windows 10=21H2
10.0.19044.4046
Microsoft Windows 10=1809
10.0.17763.5458
Microsoft Windows 11=21H2
10.0.22000.2777
Microsoft Windows 10=1809
10.0.17763.5458
Microsoft Windows 10=1809
10.0.17763.5458
Microsoft Windows 11=23H2
10.0.22631.3155
Microsoft Windows 11=23H2
10.0.22631.3155

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.14393.6709Patch KB5034767
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19045.4046Patch KB5034763
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.10240.20469Patch KB5034774
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.22621.3155Patch KB5034765
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.22000.2777Patch KB5034766
  6. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.17763.5458Patch KB5034768
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19044.4046Patch KB5034763
  8. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.20348.2322Patch KB5034770
  9. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.22631.3155Patch KB5034765

Event History

Feb 13, 2024
CVE Published
via CISA·12:00 AM
Known Exploited
via CISA·12:00 AM
Data Sourced
via Microsoft·08:00 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·08:00 AM
Affected Software
Updated
via Microsoft·08:00 AM
Affected Software
Updated
via Microsoft·08:00 AM
Description
CVE Published
via MITRE·06:02 PM
Data Sourced
via MITRE·06:02 PM
DescriptionSeverity
Data Sourced
via NVD·06:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
News Published
via BleepingComputer·08:52 PM
Feb 14, 2024
News Published
via The Register·01:47 AM
News Published
via The Register·01:51 AM
Feb 17, 2024
News Published
via BleepingComputer·08:54 PM

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Frequently Asked Questions

1

What is the severity of CVE-2024-21351?

CVE-2024-21351 is classified as a security feature bypass vulnerability with potential for code execution.

2

How do I fix CVE-2024-21351?

To fix CVE-2024-21351, apply the security patches provided by Microsoft for the affected versions of Windows.

3

What versions of Windows are affected by CVE-2024-21351?

CVE-2024-21351 affects multiple versions of Windows, including Windows 10, Windows 11, and Windows Server.

4

What potential impact does CVE-2024-21351 have on systems?

The impact of CVE-2024-21351 can include unauthorized code execution, which may lead to data exposure or loss of system availability.

5

How can I identify if my Windows system is vulnerable to CVE-2024-21351?

You can determine your system's vulnerability to CVE-2024-21351 by checking the installed version of Windows against the list of affected products and whether recent patches have been applied.

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