{"id":"CVE-2024-40719","aliases":["EUVD-2024-38584","GHSA-qx3j-rj87-66pj"],"status":"published","title":"CHANGING Information Technology TCBServiSign Windows Version - Inadequate Encryption Strength","description":"The encryption strength of the authorization keys in CHANGING Information Technology TCBServiSign Windows Version is insufficient. When a remote attacker tricks a victim into visiting a malicious website, TCBServiSign will treat that website as a legitimate server and interact with it.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00185,"percentile":0.08213,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-326"],"published":"2024-08-02T10:05:24Z","modified":"2026-06-17T07:46:24Z","products":[{"vendor":"changing information technology","product":"tcbservisign windows version"},{"vendor":"changingtec","product":"tcb_servisign"}],"references":[{"url":"https://www.twcert.org.tw/tw/cp-132-7964-5b266-1.html","tags":["third-party-advisory","Third Party Advisory"]},{"url":"https://www.twcert.org.tw/en/cp-139-7970-e8ac5-2.html","tags":["third-party-advisory","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-40719"},{"url":"https://github.com/advisories/GHSA-qx3j-rj87-66pj"}],"sources":{"cve":[{"id":"CVE-2024-40719","title":"CHANGING Information Technology TCBServiSign Windows Version - Inadequate Encryption Strength","description":"The encryption strength of the authorization keys in CHANGING Information Technology TCBServiSign Windows Version is insufficient. When a remote attacker tricks a victim into visiting a malicious website, TCBServiSign will treat that website as a legitimate server and interact with it.","status":"published","published":"2024-08-02T10:05:24.168Z","modified":"2024-08-02T15:30:54.622Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-326"],"updated_at":"2026-11-02T14:34:06.811965Z"}],"euvd":[{"id":"EUVD-2024-38584","description":"The encryption strength of the authorization keys in CHANGING Information Technology TCBServiSign Windows Version is insufficient. When a remote attacker tricks a victim into visiting a malicious website, TCBServiSign will treat that website as a legitimate server and interact with it.","status":"published","published":"2024-08-02T10:05:24Z","modified":"2024-08-02T15:30:54Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:50:05.016714Z"}],"ghsa":[{"id":"GHSA-qx3j-rj87-66pj","title":"The encryption strength of the authorization keys in CHANGING Information Technology TCBServiSign...","description":"The encryption strength of the authorization keys in CHANGING Information Technology TCBServiSign Windows Version is insufficient. When a remote attacker tricks a victim into visiting a malicious website, TCBServiSign will treat that website as a legitimate server and interact with it.","status":"published","published":"2024-08-02T12:31:43Z","modified":"2024-08-02T12:31:48Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-326"],"updated_at":"2026-11-02T14:57:50.552665Z"}],"nvd":[{"id":"CVE-2024-40719","description":"The encryption strength of the authorization keys in CHANGING Information Technology TCBServiSign Windows Version is insufficient. When a remote attacker tricks a victim into visiting a malicious website, TCBServiSign will treat that website as a legitimate server and interact with it.","status":"published","published":"2024-08-02T10:16:00.47Z","modified":"2026-06-17T07:46:24.17Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-326"],"updated_at":"2026-11-02T14:10:15.933769Z"}]}}