HOMEVULNERABILITIESCVE-2022-43664
HIGH

CVE-2022-43664

CWE-416Published: April 5, 2023· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2022-43664 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

justsystems1 product(s)
ichitaro 2022
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://jvn.jp/en/jp/JVN79149117/
ADVISORYhttps://talosintelligence.com/vulnerability_reports/TALOS-2022-1673
ADVISORYhttps://jvn.jp/en/jp/JVN79149117/
ADVISORYhttps://talosintelligence.com/vulnerability_reports/TALOS-2022-1673

All References (5)

→
https://jvn.jp/en/jp/JVN79149117/Third Party Advisory · VDB Entry
→
https://talosintelligence.com/vulnerability_reports/TALOS-2022-1673Exploit · Third Party Advisory
→
https://jvn.jp/en/jp/JVN79149117/Third Party Advisory · VDB Entry
→
https://talosintelligence.com/vulnerability_reports/TALOS-2022-1673Exploit · Third Party Advisory
→
https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1673

Quick Facts

CVE IDCVE-2022-43664
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-416
CISA KEVNo
Affected1 vendor(s)
PublishedApr 5, 2023

Related CVEs (CWE-416)

CVE-2012-1973
10.0
CVE-2012-1972
10.0
CVE-2010-3116
10.0
CVE-2010-2302
10.0
CVE-2010-3252
10.0
CVE-2012-1974
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-43664 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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