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CVE-2013-3644

26
FAUCET Score

CVE-2013-3644 is an unspecified vulnerability impacting multiple versions of JustSystems Ichitaro products, including Ichitaro 2006-2013, Ichitaro Pro, Ichitaro Government, Ichitaro Portable, Ichitaro Viewer, and Ichitaro JUST School. This critical vulnerability allows remote attackers to execute arbitrary code through specially crafted documents. With a CVSS score of 10.0, it represents a severe risk with network-based attacks requiring low complexity and no authentication, leading to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code in Metasploit or ExploitDB, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
6CPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro:6:-:government:*:*:*:*:*
7CPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro:7:-:government:*:*:*:*:*
2006CPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro:2006:*:*:*:*:*:*:*
2006CPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro:2006:-:government:*:*:*:*:*
2007CPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro:2007:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
4.17%
Probability of exploitation in next 30 days
EPSS Percentile
89.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0417 is in the 82nd percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

jvndb.jvn.jp / jvndb/JVNDB-2013-000058
jvn.jp / en/jp/JVN98712361/index.html
justsystems.com / jp/info/js13002.html