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CVE-2007-5687

25
FAUCET Score

CVE-2007-5687 describes multiple buffer overflow vulnerabilities in JustSystems Ichitaro versions 2004-2007 and 11-13. These flaws, residing in the rich text processing functionality, allow remote attackers to execute arbitrary code through specially crafted long pard fields, font names, or titles. With a CVSS score of 9.3, this vulnerability is critical, requiring no authentication and having a medium attack complexity, leading to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting it is not currently a widespread threat.

Impacted Technologies

VendorProductVersion(s)CPE
11.0CPE matchmatch criteria
cpe:2.3:a:justsystem:ichitaro:11.0:*:*:*:*:*:*:*
12.0CPE matchmatch criteria
cpe:2.3:a:justsystem:ichitaro:12.0:*:*:*:*:*:*:*
13.0CPE matchmatch criteria
cpe:2.3:a:justsystem:ichitaro:13.0:*:*:*:*:*:*:*
2004CPE matchmatch criteria
cpe:2.3:a:justsystem:ichitaro:2004:*:*:*:*:*:*:*
2005CPE matchmatch criteria
cpe:2.3:a:justsystem:ichitaro:2005:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.74%
Probability of exploitation in next 30 days
EPSS Percentile
92.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0574 is in the 64th percentile among its peer group of 8,918 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvn.jp / jp/JVN%2329211062/index.html
jvn.jp / jp/JVN%2332981509/index.html
jvn.jp / jp/JVN%2350495547/index.html
osvdb.org / 39394
secunia.com / advisories/27393
PatchVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/38129
exchange.xforce.ibmcloud.com / vulnerabilities/38130
fourteenforty.jp / research/advisory.cgi
fourteenforty.jp / research/advisory.cgi
fourteenforty.jp / research/advisory.cgi
ipa.go.jp / security/vuln/200710_Ichitaro.html
justsystems.com / jp/info/pd7004.html
Patch
securityfocus.com / bid/26206
vupen.com / english/advisories/2007/3623