Zero-day vulnerability in Windows

Protection mechanism failure
CVE-2024-29988

Vulnerability details

Advisory: SB2024040977 - SmartScreen prompt bypass in Microsoft Windows

Vulnerable component: Windows

CVE-ID: CVE-2024-29988

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

CWE-ID: CWE-693 - Protection Mechanism Failure

Description:

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient implementation of the Mark of the Web (MotW) feature. A remote attacker can supply a malicious file inside an archive to bypass EDR/NDR detection, bypass the SmartScreen prompt and compromise the affected system.

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

External links:

https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2024-29988

https://www.zerodayinitiative.com/blog/2024/4/9/the-april-2024-security-updates-review

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.