CVE-2024-21351

Windows SmartScreen Security Feature Bypass Vulnerability

CVE-2024-21351 is fixed in 22 products on 1 platform, first by KB5034767, released February 13, 2024. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on February 13, 2024. Patch Radar priority: Patch now.

Patch nowCISA KEV

CVSS

7.6

Moderate

Exploitation

Exploited

Reported by the vendor

CISA KEV

Feb 13, 2024

Federal due date Mar 5, 2024

EPSS

0.2780

98th percentile

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 10 Version 1607 for 32-bit Systems	14393.6709	KB5034767	Feb 13, 2024
Windows 10 Version 1607 for x64-based Systems	14393.6709	KB5034767	Feb 13, 2024
Windows 10 Version 1809 for 32-bit Systems	17763.5458	KB5034768	Feb 13, 2024
Windows 10 Version 1809 for ARM64-based Systems	17763.5458	KB5034768	Feb 13, 2024
Windows 10 Version 1809 for x64-based Systems	17763.5458	KB5034768	Feb 13, 2024
Windows 10 Version 21H2 for 32-bit Systems		KB5034763	Feb 13, 2024
Windows 10 Version 21H2 for ARM64-based Systems		KB5034763	Feb 13, 2024
Windows 10 Version 21H2 for x64-based Systems		KB5034763	Feb 13, 2024
Windows 10 Version 22H2 for 32-bit Systems		KB5034763	Feb 13, 2024
Windows 10 Version 22H2 for ARM64-based Systems		KB5034763	Feb 13, 2024
Windows 10 Version 22H2 for x64-based Systems		KB5034763	Feb 13, 2024
Windows 10 for 32-bit Systems	10240.20469	KB5034774	Feb 13, 2024
Windows 10 for x64-based Systems	10240.20469	KB5034774	Feb 13, 2024
Windows 11 Version 22H2 for ARM64-based Systems		KB5034765	Feb 13, 2024
Windows 11 Version 22H2 for x64-based Systems		KB5034765	Feb 13, 2024
Windows 11 Version 23H2 for ARM64-based Systems		KB5034765	Feb 13, 2024
Windows 11 Version 23H2 for x64-based Systems		KB5034765	Feb 13, 2024
Windows 11 version 21H2 for ARM64-based Systems	22000.2777	KB5034766	Feb 13, 2024
Windows 11 version 21H2 for x64-based Systems	22000.2777	KB5034766	Feb 13, 2024
Windows Server 2016	14393.6709	KB5034767	Feb 13, 2024
Windows Server 2019	17763.5458	KB5034768	Feb 13, 2024
Windows Server 2022	20348.2322	KB5034770	Feb 13, 2024

Details

Published
February 13, 2024
Weakness
Improper Control of Generation of Code ('Code Injection')
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21351

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