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CVE-2009-4737

25
FAUCET Score

CVE-2009-4737 describes a stack-based buffer overflow vulnerability in JustSystems Ichitaro 13, 2004-2009, and Ichitaro Viewer 2009 19.0.1.0 and earlier. This flaw, related to "pvpara ffooter," allows unauthenticated, context-dependent attackers to execute arbitrary code by tricking a user into opening a specially crafted Rich Text File (RTF). With a CVSS score of 9.3 (Critical), successful exploitation could lead to complete compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
13CPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro:13:*:*:*:*:*:*:*
2004CPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro:2004:*:*:*:*:*:*:*
2005CPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro:2005:*:*:*:*:*:*:*
2006CPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro:2006:*:*:*:*:*:*:*
2006CPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro:2006:-:government:*:*:*:*:*

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
3.48%
Probability of exploitation in next 30 days
EPSS Percentile
87.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0348 is in the 47th percentile among its peer group of 8,920 CVEs.

Social Chatter

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

jvndb.jvn.jp / ja/contents/2009/JVNDB-2009-000018.html
jvn.jp / en/jp/JVN33846134/index.html
secunia.com / advisories/34611
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/49739
fourteenforty.jp / research/advisory.cgi
ipa.go.jp / security/vuln/documents/2009/200904_ichitaro.html
justsystems.com / jp/info/js09002.html
PatchVendor Advisory
osvdb.org / 53349
securityfocus.com / bid/34403
vupen.com / english/advisories/2009/0957
PatchVendor Advisory