Actively exploited · Published Feb 13, 2024 · Assigned by microsoft

CVE-2024-21351Windows SmartScreen Security Feature Bypass Vulnerability

High 7.6 Exploited

In plain English

A high-severity code injection in Windows 10 Version 1507 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on February 13, 2024). The chance it is exploited in the next 30 days is estimated at 27.8% (higher than 98% of all known vulnerabilities). Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Severity (CVSS 3.1)7.6High
Exploit odds (30 days)27.8%top 1.9% of all CVEs
Exploited in the wildYesCISA KEV since Feb 13, 2024
Attack toolingNoneno public tooling known

CISA guidance

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Federal agencies must remediate by Mar 5, 2024.

Official description

Windows SmartScreen Security Feature Bypass Vulnerability

Affected products (as reported)

VendorProductVersions
Microsoft Windows 10 Version 1507 10.0.10240.0 – before 10.0.10240.20469
Microsoft Windows 10 Version 1607 10.0.14393.0 – before 10.0.14393.6709
Microsoft Windows 10 Version 1809 10.0.17763.0 – before 10.0.17763.5458
Microsoft Windows 10 Version 1809 10.0.0 – before 10.0.17763.5458
Microsoft Windows 10 Version 21H2 10.0.19043.0 – before 10.0.19044.4046
Microsoft Windows 10 Version 22H2 10.0.19045.0 – before 10.0.19045.4046
Microsoft Windows 11 version 21H2 10.0.0 – before 10.0.22000.2777
Microsoft Windows 11 version 22H2 10.0.22621.0 – before 10.0.22621.3155
Microsoft Windows 11 version 22H3 10.0.22631.0 – before 10.0.22631.3155
Microsoft Windows 11 Version 23H2 10.0.22631.0 – before 10.0.22631.3155
Microsoft Windows Server 2016 10.0.14393.0 – before 10.0.14393.6709
Microsoft Windows Server 2019 10.0.17763.0 – before 10.0.17763.5458
Microsoft Windows Server 2022 10.0.20348.0 – before 10.0.20348.2322

Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L/E:U/RL:O/RC:C

References