Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2006-4326

21
FAUCET Score

CVE-2006-4326 describes a stack-based buffer overflow vulnerability affecting multiple versions of Justsystem Ichitaro and FormLiner. This flaw allows remote attackers to execute arbitrary code by supplying long Unicode strings within a specially crafted document. With a CVSS score of 7.5, this vulnerability is considered highly severe due to its network-based attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. Notably, this vulnerability was actively exploited by malware like Trojan.Tarodrop at the time of its discovery, though there is no current exploit intelligence or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:justsystem:formliner:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:a:justsystem:ichitaro:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:a:justsystem:ichitaro:10.0:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:a:justsystem:ichitaro:11.0:*:*:*:*:*:*:*
12.0CPE matchmatch criteria
cpe:2.3:a:justsystem:ichitaro:12.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.48%
Probability of exploitation in next 30 days
EPSS Percentile
90.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0448 is in the 83rd percentile among its peer group of 51,485 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

secunia.com / advisories/21552
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/28484
justsystem.co.jp / info/pd6002.html
Patch
securityfocus.com / bid/19550
symantec.com / enterprise/security_response/weblog/2006/08/justsystems_ichitaro_0day_used.html
symantec.com / enterprise/security_response/writeup.jsp
vupen.com / english/advisories/2006/3332
Vendor Advisory