CVE-2014-4077KEV · OVERDUE

Microsoft IME Japanese Privilege Escalation Vulnerability

High · published November 11, 2014

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.8. It is confirmed in active exploitation. It sits in the 99.0th percentile for exploit probability.

1590
days past CISA
deadline
CVSS v3.1
7.8
EPSS
55%
Percentile
99.0
In the wild
Confirmed
What it is

🚨 A crafted PDF can unleash chaos by bypassing sandbox defenses in Windows systems with Japanese IME installed! ⚡ Imagine a hotel with secure rooms where only invited guests can enter, but a sneaky guest finds a way to slip through the side door — that's what this vulnerability does to your system's defenses! With this vulnerability, a remote attacker could gain elevated privileges, allowing them to access sensitive data and potentially take control of the system. It's like someone finding the spare key under the doormat and wandering freely through your digital space, wreaking havoc without anyone noticing!

Put simply

Imagine a hotel with secure rooms where only invited guests can enter, but a sneaky guest finds a way to slip through the side door — that's what this vulnerability does to your system's defenses! This flaw resides in IMJPDCT.EXE (the Japanese Input Method Editor), where a specially crafted PDF can exploit the system's sandbox protection mechanism, leading to an elevation of privilege without proper authentication.

What to do

With this vulnerability, a remote attacker could gain elevated privileges, allowing them to access sensitive data and potentially take control of the system. It's like someone finding the spare key under the doormat and wandering freely through your digital space, wreaking havoc without anyone noticing! To mitigate this risk, immediately update your systems to the latest patches provided by Microsoft. Ensure that your environments are no longer using vulnerable versions of Windows or Office that may still have IME installed. Regularly audit your software for potential vulnerabilities! You've got this! Follow these steps, and you'll turn this potential disaster into a story of triumph! 🛡️

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.54577 · 99.0th percentile
Published
2014-11-11T22:00Z
KEV added
2022-05-25 · due 2022-06-15
EPSS history
Timeline
  • 25 MAY 00:00Z
    Added to CISA KEV — remediate by Jun 15
    kev
  • 11 NOV 22:00Z
    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…
    cvelistv5