Zero-day vulnerability in Windows

Security features bypass
CVE-2023-24880

Vulnerability details

Advisory: SB2023031425 - SmartScreen security feature bypass in Microsoft Windows

Vulnerable component: Windows

CVE-ID: CVE-2023-24880

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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 incorrect implementation of the Windows SmartScreen Security Feature. A remote attacker can trick the victim to open a specially crafted file and bypass the Mark of the Web (MOTW) defenses.

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

External links:

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-24880

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.