CVE-2014-4077

CVE-2014-4077 is a high-severity (CVSS 7.8) vulnerability in Microsoft Input Method Editor (IME) Japanese. CISA added it to the Known Exploited Vulnerabilities catalog on May 25, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by June 15, 2022. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.

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.

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

• http://blogs.technet.com/b/srd/archive/2014/11/11/assessing-risk-for-the-november-2014-security-updates.aspx
• http://www.securitytracker.com/id/1031196
• http://www.securitytracker.com/id/1031197
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-078
• http://blogs.technet.com/b/srd/archive/2014/11/11/assessing-risk-for-the-november-2014-security-updates.aspx
• http://www.securitytracker.com/id/1031196
• http://www.securitytracker.com/id/1031197
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-078