How severe is CVE-2013-3644?

CVE-2013-3644 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2013-3644 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3644?

CVE-2013-3644 primarily affects Justsystems Ichitaro. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-3644?

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

When was CVE-2013-3644 published?

CVE-2013-3644 was published on 2013-06-18 and last updated on 2026-06-16.

CVE-2013-3644

CVE-2013-3644 is a critical-severity vulnerability in Justsystems Ichitaro with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Justsystems Ichitaro
Published: 2013-06-18
Last modified: 2026-06-16

Description

Unspecified vulnerability in JustSystems Ichitaro 2006 through 2013; Ichitaro Pro through 2; Ichitaro Government 6, 7, and 2006 through 2010; Ichitaro Portable with oreplug; Ichitaro Viewer; and Ichitaro JUST School through 2010 allows remote attackers to execute arbitrary code via a crafted document.

Frequently asked questions

What is CVE-2013-3644?: Unspecified vulnerability in JustSystems Ichitaro 2006 through 2013; Ichitaro Pro through 2; Ichitaro Government 6, 7, and 2006 through 2010; Ichitaro Portable with oreplug; Ichitaro Viewer; and Ichitaro JUST School through 2010 allows remote attackers to execute arbitrary code via a crafted document.
How severe is CVE-2013-3644?: CVE-2013-3644 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2013-3644 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3644?: CVE-2013-3644 primarily affects Justsystems Ichitaro. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-3644?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2013-3644 published?: CVE-2013-3644 was published on 2013-06-18 and last updated on 2026-06-16.

References

Affected products (18)

cpe:2.3:a:justsystems:ichitaro:6:-:government:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:7:-:government:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2006:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2006:-:government:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2007:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2007:-:government:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2008:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2008:-:government:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2009:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2009:-:government:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2010:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2010:-:government:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2011:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2012:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro:2013:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro_just_school:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro_portable:-:oreplug:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro_viewer:-:*:*:*:*:*:*:*

More vulnerabilities in Justsystems Ichitaro

CVE-2014-7247 — Critical (CVSS 10.0): Unspecified vulnerability in JustSystems Ichitaro 2008 through 2011; Ichitaro Government 6, 7, 2008, 2009, and 2010;…
CVE-2013-5990 — Critical (CVSS 9.3): Unspecified vulnerability in JustSystems Ichitaro 2006 through 2011; Ichitaro Government 6, 7, and 2006 through 2010;…
CVE-2013-0707 — Critical (CVSS 9.3): Unspecified vulnerability in JustSystems Ichitaro 2006 and 2007, Ichitaro Government 2006 and 2007, Ichitaro Portable…
CVE-2012-0269 — Critical (CVSS 9.3): Buffer overflow in JustSystems Ichitaro 2011 Sou, Ichitaro 2006 through 2011, Ichitaro Government 2006 through 2010,…
CVE-2011-1331 — Critical (CVSS 9.3): JustSystems Ichitaro 2005 through 2011, Ichitaro Government 6, Ichitaro Government 2006 through 2010, Ichitaro…
CVE-2010-3916 — Critical (CVSS 9.3): Unspecified vulnerability in JustSystems Ichitaro and Ichitaro Government allows remote attackers to execute arbitrary…

All CVEs affecting Justsystems Ichitaro →