Zero-day vulnerability in Windows

Security features bypass
CVE-2023-32049

Vulnerability details

Advisory: SB2023071160 - Security restrictions bypass in Windows SmartScreen

Vulnerable component: Windows

CVE-ID: CVE-2023-32049

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 validation of URLs in Windows SmartScreen. A remote attacker can trick the victim to visit a specially crafted URL, bypass the Open File - Security Warning prompt 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/vulnerability/CVE-2023-32049

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.