CVE-2014-4077: Microsoft IME Japanese Privilege Escalation Vulnerability

High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2022-05-25. EPSS: 54.6% chance of exploitation in the next 30 days.

Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, and Office 2007 SP3, when IMJPDCT.EXE (aka IME for Japanese) is installed, allow remote attackers to bypass a sandbox protection mechanism via a crafted PDF document, aka "Microsoft IME (Japanese) Elevation of Privilege Vulnerability," as exploited in the wild in 2014.

Affected products

• Microsoft Office 2007 IME: version sp3 only
• Microsoft Windows 7: affected versions not specified
• Microsoft Windows Server 2003: affected versions not specified
• Microsoft Windows Server 2008: affected versions not specified; version r2 only
• Microsoft Windows Vista: affected versions not specified

Published 2014-11-11. Last modified 2026-06-17.