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CVE-2009-4738

22
FAUCET Score

CVE-2009-4738 describes an unspecified vulnerability in JustSystems ATOK 2006-2009, ATOK flat-rate service, and Just Smile 4 with the ATOK Smile module. This flaw allows physically proximate attackers to bypass the screen lock and execute commands with system privileges through unknown vectors related to launching external applications. With a CVSS score of 7.2 (high), it has low attack complexity and no authentication required, leading to complete confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2006CPE matchmatch criteria
cpe:2.3:a:justsystems:atok:2006:-:windows:*:*:*:*:*
2007CPE matchmatch criteria
cpe:2.3:a:justsystems:atok:2007:-:windows:*:*:*:*:*
2008CPE matchmatch criteria
cpe:2.3:a:justsystems:atok:2008:-:windows:*:*:*:*:*
2009CPE matchmatch criteria
cpe:2.3:a:justsystems:atok:2009:-:windows:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:justsystems:atok_flat-rate_service:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
32.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 42nd percentile among its peer group of 3,237 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 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-2009-000057.html
jvn.jp / en/jp/JVN57040664/index.html
secunia.com / advisories/36560
Vendor Advisory
justsystems.com / jp/info/js09003.html
PatchVendor Advisory
securityfocus.com / bid/36220