Security readout for executives and security teams
This is an old JustSystems Ichitaro file-handling vulnerability that allowed code execution when a user opened a crafted file. The source record says it was exploited in the wild by Trojan.Tarodrop.H in March 2009. Business urgency is highest where legacy Japanese office software or Ichitaro viewers remain installed. Likely exposure is limited to endpoints retaining legacy JustSystems Ichitaro products or viewer components, especially systems that open untrusted documents. Modern environments without these products are unlikely to be affected, but inherited desktop images and archival workstations should be checked. Prioritize this where legacy JustSystems software remains in use. The risk is serious because document opening could execute attacker code, but scope is likely narrow in modern fleets. If no affected software is present, treat as a historical tracking item. Mitigation focus: Inventory endpoints for Ichitaro 13, 2004-2008, Lite2, and Viewer 5.1.5.0 or earlier.; Apply JustSystems guidance from advisory JS09001 where applicable.; Remove unsupported Ichitaro viewers or products from systems that no longer require them..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Execution behavior lookup
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Open ATT&CK lookupCVE-2009-1054 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- ichitaro-webpuraguinbyua-code-execution(49280)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
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