How severe is CVE-2014-4077?

CVE-2014-4077 has a CVSS score of 7.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2014-4077?

Affected package information for CVE-2014-4077 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2014-4077?

No fixed version has been published for CVE-2014-4077 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2014-4077 actively exploited in the wild?

Yes. There are 3 known exploit references for CVE-2014-4077, including 3 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2014-4077?

CVE-2014-4077 has an EPSS (Exploit Prediction Scoring System) score of 51.3%, placing it in the 98th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2014-4077 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2014-4077 (Microsoft IME Japanese Privilege Escalation Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-05-25. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-06-15. The required action was: Apply updates per vendor instructions. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

Which products and versions are affected by CVE-2014-4077?

CVE-2014-4077 affects microsoft office 2007 ime (1 version, e.g. sp3); microsoft windows 7; microsoft windows server 2003; microsoft windows server 2008 (1 version, e.g. r2), and 1 more product(s). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2014-4077 published, and has it been updated?

CVE-2014-4077 was published on November 11, 2014 and was last updated on April 22, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2022-05-25 — agencies required to remediate by 2022-06-15

CVE-2014-4077

HIGH

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…

Published

Nov 11, 2014

Updated

Apr 22, 2026

Affected

0 pkgs

Patched

None yet

Exploits

3 known

EPSS Exploitation Probability

via FIRST.org ↗

51.3%probability of exploitation in next 30 days

High Risk98th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

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

5 products · 7 configurations

Application

office 2007 imemicrosoft

1 version

sp3

windows 7microsoft

all

windows server 2003microsoft

all

windows server 2008microsoft

1 version

windows vistamicrosoft

all

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 200…

docs.microsoft.comGoogle-sheetNov 2014

Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 200…

nvd.nist.govNVDOct 2018

Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 200…

cisa.govCISAMay 2022

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2014-4077 in your stack?

O3 detects CVE-2014-4077 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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