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CVE-2022-43664 Details

Description

A use-after-free vulnerability exists within the way Ichitaro Word Processor 2022, version 1.0.1.57600, processes protected documents. A specially crafted document can trigger reuse of freed memory, which can lead to further memory corruption and potentially result in arbitrary code execution. An attacker can provide a malicious document to trigger this vulnerability.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://jvn.jp/en/jp/JVN79149117/	CVE	Third Party AdvisoryVDB Entry
https://talosintelligence.com/vulnerability_reports/TALOS-2022-1673	CVE	ExploitThird Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1673	CVE
https://jvn.jp/en/jp/JVN79149117/	[email protected]	Third Party AdvisoryVDB Entry
https://talosintelligence.com/vulnerability_reports/TALOS-2022-1673	[email protected]	ExploitThird Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-416	Use After Free	[email protected]

Affected Products

Product	Versions
justsystems ichitaro 2022	1.0.1.57600
CPE cpe:2.3:a:justsystems:ichitaro_2022:1.0.1.57600:::::::* Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Apr 18, 2023	Initial Analysis	[email protected]