{"id":"CVE-2022-43664","aliases":["EUVD-2022-46659","GHSA-h2hj-3cjv-jc39"],"status":"published","title":"A use-after-free vulnerability exists within the way Ichitaro Word Processor 2022, version 1.0.1...","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.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00526,"percentile":0.44842,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2023-04-05T15:18:03Z","modified":"2026-06-17T05:07:04Z","products":[{"vendor":"ichitaro","product":"ichitaro"},{"vendor":"justsystems","product":"ichitaro_2022"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2022-1673","tags":["x_transferred","Exploit","Third Party Advisory"]},{"url":"https://jvn.jp/en/jp/JVN79149117/","tags":["x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1673"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-43664"},{"url":"https://jvn.jp/en/jp/JVN79149117"},{"url":"https://github.com/advisories/GHSA-h2hj-3cjv-jc39"}],"sources":{"cve":[{"id":"CVE-2022-43664","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.","status":"published","published":"2023-04-05T15:18:03.855Z","modified":"2025-02-10T18:03:48.922Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:34:25.618175Z"}],"euvd":[{"id":"EUVD-2022-46659","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.","status":"published","published":"2023-04-05T15:18:03Z","modified":"2025-02-10T18:03:48Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:04:01.319038Z"}],"ghsa":[{"id":"GHSA-h2hj-3cjv-jc39","title":"A use-after-free vulnerability exists within the way Ichitaro Word Processor 2022, version 1.0.1...","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.","status":"published","published":"2023-04-05T18:30:18Z","modified":"2024-04-04T03:22:27Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:56:14.332077Z"}],"nvd":[{"id":"CVE-2022-43664","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.","status":"published","published":"2023-04-05T16:15:07.097Z","modified":"2026-06-17T05:07:04.42Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:07:37.020555Z"}]}}