{"id":"CVE-2023-33237","aliases":["EUVD-2023-37406","GHSA-p33g-779c-ccmq"],"status":"published","title":"Authentication Bypass Without Administrator Privilege","description":"TN-5900 Series firmware version v3.3 and prior is vulnerable to improper-authentication vulnerability. This vulnerability arises from inadequate authentication measures implemented in the web API handler, allowing low-privileged APIs to execute restricted actions that only high-privileged APIs are allowed This presents a potential risk of unauthorized exploitation by malicious actors.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00628,"percentile":0.50455,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287","CWE-863"],"published":"2023-08-17T01:50:53Z","modified":"2026-06-17T06:01:22Z","products":[{"vendor":"moxa","product":"tn-5900"},{"vendor":"moxa","product":"tn-5900 series"},{"vendor":"moxa","product":"tn-5900_firmware"}],"references":[{"url":"https://www.moxa.com/en/support/product-support/security-advisory/mpsa-230402-tn-5900-and-tn-4900-series-web-server-multiple-vulnerabilities","tags":["vendor-advisory","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-33237"},{"url":"https://github.com/advisories/GHSA-p33g-779c-ccmq"}],"sources":{"cve":[{"id":"CVE-2023-33237","title":"Authentication Bypass Without Administrator Privilege","description":"TN-5900 Series firmware version v3.3 and prior is vulnerable to improper-authentication vulnerability. This vulnerability arises from inadequate authentication measures implemented in the web API handler, allowing low-privileged APIs to execute restricted actions that only high-privileged APIs are allowed This presents a potential risk of unauthorized exploitation by malicious actors.","status":"published","published":"2023-08-17T01:50:53.625Z","modified":"2024-10-28T06:01:08.088Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:35:34.55015Z"}],"euvd":[{"id":"EUVD-2023-37406","description":"TN-5900 Series firmware version v3.3 and prior is vulnerable to improper-authentication vulnerability. This vulnerability arises from inadequate authentication measures implemented in the web API handler, allowing low-privileged APIs to execute restricted actions that only high-privileged APIs are allowed This presents a potential risk of unauthorized exploitation by malicious actors.","status":"published","published":"2023-08-17T01:50:53Z","modified":"2024-10-28T06:01:08Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:05:16.619611Z"}],"ghsa":[{"id":"GHSA-p33g-779c-ccmq","title":"TN-5900 Series firmware version v3.3 and prior is vulnerable to improper-authentication...","description":"TN-5900 Series firmware version v3.3 and prior is vulnerable to improper-authentication vulnerability. This vulnerability arises from inadequate authentication measures implemented in the web API handler, allowing low-privileged APIs to execute restricted actions that only high-privileged APIs are allowed This presents a potential risk of unauthorized exploitation by malicious actors. \n","status":"published","published":"2023-08-17T03:30:16Z","modified":"2024-10-28T06:33:33Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-287","CWE-863"],"updated_at":"2026-11-02T14:58:37.515988Z"}],"nvd":[{"id":"CVE-2023-33237","description":"TN-5900 Series firmware version v3.3 and prior is vulnerable to improper-authentication vulnerability. This vulnerability arises from inadequate authentication measures implemented in the web API handler, allowing low-privileged APIs to execute restricted actions that only high-privileged APIs are allowed This presents a potential risk of unauthorized exploitation by malicious actors.","status":"published","published":"2023-08-17T02:15:41.177Z","modified":"2026-06-17T06:01:22.537Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-863","CWE-287"],"updated_at":"2026-11-02T14:08:24.487686Z"}]}}