{"id":"CVE-2024-40720","aliases":["EUVD-2024-38585","GHSA-whp4-jh65-8472"],"status":"published","title":"CHANGING Information Technology TCBServiSign Windows Version - Improper Input Validation","description":"The specific API in TCBServiSign Windows Version from CHANGING Information Technology does not properly validate server-side input. When a user visits a spoofed website, unauthenticated remote attackers can modify the `HKEY_CURRENT_USER` registry to execute arbitrary commands.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00593,"percentile":0.48705,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2024-08-02T10:10:16Z","modified":"2026-06-17T07:46:24Z","products":[{"vendor":"changing information technology","product":"tcbservisign windows version"},{"vendor":"changinginformationtechnology","product":"tcbservisign"},{"vendor":"changingtec","product":"tcb_servisign"}],"references":[{"url":"https://www.twcert.org.tw/tw/cp-132-7965-8285d-1.html","tags":["third-party-advisory","Third Party Advisory"]},{"url":"https://www.twcert.org.tw/en/cp-139-7971-d9584-2.html","tags":["Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-40720"},{"url":"https://github.com/advisories/GHSA-whp4-jh65-8472"}],"sources":{"cve":[{"id":"CVE-2024-40720","title":"CHANGING Information Technology TCBServiSign Windows Version - Improper Input Validation","description":"The specific API in TCBServiSign Windows Version from CHANGING Information Technology does not properly validate server-side input. When a user visits a spoofed website, unauthenticated remote attackers can modify the `HKEY_CURRENT_USER` registry to execute arbitrary commands.","status":"published","published":"2024-08-02T10:10:16.249Z","modified":"2024-08-02T16:08:16.108Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:34:06.811965Z"}],"euvd":[{"id":"EUVD-2024-38585","description":"The specific API in TCBServiSign Windows Version from CHANGING Information Technology does not properly validate server-side input. When a user visits a spoofed website, unauthenticated remote attackers can modify the `HKEY_CURRENT_USER` registry to execute arbitrary commands.","status":"published","published":"2024-08-02T10:10:16Z","modified":"2024-08-02T16:08:16Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:50:04.380287Z"}],"ghsa":[{"id":"GHSA-whp4-jh65-8472","title":"The specific API in TCBServiSign Windows Version from CHANGING Information Technology does not...","description":"The specific API in TCBServiSign Windows Version from CHANGING Information Technology does not properly validate server-side input. When a user visits a spoofed website, unauthenticated remote attackers can modify the `HKEY_CURRENT_USER` registry to execute arbitrary commands.","status":"published","published":"2024-08-02T12:31:43Z","modified":"2024-08-02T12:31:43Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:57:50.552665Z"}],"nvd":[{"id":"CVE-2024-40720","description":"The specific API in TCBServiSign Windows Version from CHANGING Information Technology does not properly validate server-side input. When a user visits a spoofed website, unauthenticated remote attackers can modify the `HKEY_CURRENT_USER` registry to execute arbitrary commands.","status":"published","published":"2024-08-02T11:16:42.763Z","modified":"2026-06-17T07:46:24.277Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:10:15.933769Z"}]}}