What is the CVSS score of CVE-2013-3644?

CVE-2013-3644 has a CVSS 2.0 base score of 10.0 (Critical). CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS exploitation probability: 11.7%.

Ichitaro CVE-2013-3644

CRITICAL

2013-06-18 vultures@jpcert.or.jp

RCE Ichitaro Ichitaro Viewer Ichitaro Portable Ichitaro Just School Justsystems

10.0

CVSS 2.0 · NVD

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Vulnerability Assessment

Impact	CVSS score of 10.0 (CRITICAL). Attack characteristics: network attack vector, low complexity. EPSS exploitation probability: 11.65%.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.

No patch listed yet 11.7% exploitation probability (EPSS)

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AnalysisAI

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. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. Epss exploitation probability 11.7% and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

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. Affected products include: Justsystems Ichitaro, Justsystems Ichitaro Just School, Justsystems Ichitaro Portable, Justsystems Ichitaro Viewer. Version information: through 2013.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 10.0 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Confidentiality

Integrity

Availability

DescriptionCVE.org

Threat Intelligence Overview

EPSS Score

11.7%

Top 6% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC No

EPSS 11.7%

Patch available No

Active threat No

Deciding rule

CRITICAL severity

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +12

CVSS: +50

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

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:-:*:*:*:*:*:*:*

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References

Advisories & patches

REF http://jvn.jp/en/jp/JVN98712361/index.html REF http://jvndb.jvn.jp/jvndb/JVNDB-2013-000058 REF http://www.justsystems.com/jp/info/js13002.html

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