How severe is CVE-2009-4738?

CVE-2009-4738 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2009-4738 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4738?

CVE-2009-4738 primarily affects Justsystems Atok. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-4738?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-4738 published?

CVE-2009-4738 was published on 2013-01-18 and last updated on 2026-06-16.

CVE-2009-4738

CVE-2009-4738 is a high-severity vulnerability in Justsystems Atok with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Justsystems Atok
Published: 2013-01-18
Last modified: 2026-06-16

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."

Frequently asked questions

What is CVE-2009-4738?: 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."
How severe is CVE-2009-4738?: CVE-2009-4738 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2009-4738 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4738?: CVE-2009-4738 primarily affects Justsystems Atok. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-4738?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-4738 published?: CVE-2009-4738 was published on 2013-01-18 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:a:justsystems:atok:2006:-:windows:*:*:*:*:*
cpe:2.3:a:justsystems:atok:2007:-:windows:*:*:*:*:*
cpe:2.3:a:justsystems:atok:2008:-:windows:*:*:*:*:*
cpe:2.3:a:justsystems:atok:2009:-:windows:*:*:*:*:*
cpe:2.3:a:justsystems:atok_flat-rate_service:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:just_smile:4:*:*:*:*:*:*:*

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