Zero-day vulnerability in Windows

Security features bypass
CVE-2024-21351

Vulnerability details

Advisory: SB2024021334 - Security restrictions bypass in Microsoft Windows SmartScreen

Vulnerable component: Windows

CVE-ID: CVE-2024-21351

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L/E:H/RL:O/RC:C

CWE-ID: CWE-254 - Security Features

Description:

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to improper input validation when handling files downloaded from the Internet. A remote attacker can bypass the SmartScreen protection feature and trick the victim into launching a malicious files on the system.

Note, the vulnerability is being actively exploited in the wild.

External links:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2024-21351