CISA-confirmed known exploited vulnerability

CVE-2014-4077

Microsoft IME Japanese Privilege Escalation Vulnerability

Microsoft · Input Method Editor (IME) Japanese

Vulnerability details

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.

Added to CISA KEV: 2022-05-25

Ransomware campaign use: Unknown

CISA due date: 2022-06-15

Defensive guidance from CISA

Apply updates per vendor instructions.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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