HIGH
CVE-2009-4738
NVD-CWE-noinfoPublished: January 18, 2013· Updated: Jun 16, 2026
7.2
CVSS v3.1
Official Description
Unspecified vulnerability in JustSystems Corporation ATOK 2006 through 2009 and ATOK flat-rate service, and Just Smile 4 with the ATOK Smile module, allows physically proximate users to bypass the screen lock and execute commands with system privileges via unknown vectors related to "launching external applications."
Technical Analysis
CVE-2009-4738 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityC
IntegrityC
AvailabilityC
AV:L/AC:L/Au:N/C:C/I:C/A:C
Affected Vendors & Products
justsystems3 product(s)
atokatok flat-rate servicejust smile
Source: NVD CPE · 6 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
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Rapid7 / Metasploit
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PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (10)
→
http://secunia.com/advisories/36560Vendor Advisory
→
http://www.justsystems.com/jp/info/js09003.htmlPatch · Vendor Advisory
→
http://secunia.com/advisories/36560Vendor Advisory
→
http://www.justsystems.com/jp/info/js09003.htmlPatch · Vendor Advisory
Quick Facts
CVE IDCVE-2009-4738
CVSS Score7.2 / 10
SeverityHIGH
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedJan 18, 2013
Related CVEs (NVD-CWE-noinfo)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2009-4738 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.