CVE-2007-5687

Multiple buffer overflows in the rich text processing functionality in JustSystems Ichitaro 2004 through 2007, 11 through 13, and other versions allow remote attackers to execute arbitrary code via a long (1) pard field or (2) font name in the fcharset0 field, which is not properly handled in (a) JSTARO4.OCX; or (3) a long title, which is not properly handled by (b) TJSVDA.DLL.

Published: 2007-10-28 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-5687 is rated Moderate Risk (64.4/100): CVSS Critical severity, with high exploitation likelihood (EPSS 5.74%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2007-5687

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 17.53% 5.74% -11.79%
2 2025-06-28 22.10% 17.53% -4.57%
3 2025-03-30 — 22.10% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-5687

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2007-5687

Affected software / configurations for CVE-2007-5687

Vendor Product Version Raw CPE
justsystem ichitaro 11.0 cpe:2.3:a:justsystem:ichitaro:11.0:*:*:*:*:*:*:*
justsystem ichitaro 12.0 cpe:2.3:a:justsystem:ichitaro:12.0:*:*:*:*:*:*:*
justsystem ichitaro 13.0 cpe:2.3:a:justsystem:ichitaro:13.0:*:*:*:*:*:*:*
justsystem ichitaro 2004 cpe:2.3:a:justsystem:ichitaro:2004:*:*:*:*:*:*:*
justsystem ichitaro 2005 cpe:2.3:a:justsystem:ichitaro:2005:*:*:*:*:*:*:*
justsystem ichitaro 2006 cpe:2.3:a:justsystem:ichitaro:2006:*:*:*:*:*:*:*
justsystem ichitaro linux cpe:2.3:a:justsystem:ichitaro:linux:*:*:*:*:*:*:*
justsystem ichitaro lite2 cpe:2.3:a:justsystem:ichitaro:lite2:*:*:*:*:*:*:*

References for CVE-2007-5687

cvelogic Threat Intelligence