ACTIVELY EXPLOITED

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

Facts
VendorMicrosoft
ProductInput Method Editor (IME) Japanese
Actively exploitedYes
Added to CISA KEV25 May 2022
CISA federal deadline15 Jun 2022
Weakness (CWE)CWE-264

Required action (CISA's text)

Apply updates per vendor instructions.

Description (NVD)

Microsoft Input Method Editor (IME) Japanese is a keyboard with Japanese characters that can be enabled on Windows systems as it is included by default (with the default set as disabled). IME Japanese contains an unspecified vulnerability when IMJPDCT.EXE (IME for Japanese) is installed which allows attackers to bypass a sandbox and perform privilege escalation.

SOURCES

Other Microsoft flaws

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.