Zero-day vulnerability in Windows

Security features bypass
CVE-2024-30040

Vulnerability details

Advisory: SB2024051439 - Remote code execution in Microsoft Windows MSHTML platform

Vulnerable component: Windows

CVE-ID: CVE-2024-30040

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

CWE-ID: CWE-254 - Security Features

Description:

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

The vulnerability exists due to improper input validation within the Windows MSHTML Platform. A remote attacker can trick the victim to open or load a specially crafted file, bypass OLE mitigations in Microsoft 365 and Microsoft Office and execute arbitrary code on the system.

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

External links:

https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2024-30040

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.