Zero-day vulnerability in Windows

Privilege escalation

CVE-2014-4077 used in targeted attack in the wild to bypass Adobe Reader Sandbox via binary hijacking using malicious DIC file.

Vulnerability details

Advisory: SB2014111102 - Privilege escalation in Microsoft Windows

Vulnerable component: Windows

CVE-ID: CVE-2014-4077

CVSSv3 score: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls


The vulnerability allows a remote authenticated attacker to obtain elevated privileges on the target system.

The weakness exists due to improper access control in Microsoft implementation of Input Method Editor (IME) for Japanese language. A remote attacker can create a specially crafted file designed to invoke a vulnerable sandboxed application, trick the victim into opening it, gain elevated privileges and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.