{"id":"CVE-2023-39303","aliases":["EUVD-2023-43035","GHSA-pg7w-g93j-pc6j"],"status":"published","title":"QTS, QuTS hero, QuTScloud","description":"An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.1.3.2578 build 20231110 and later\nQuTS hero h5.1.3.2578 build 20231110 and later\nQuTScloud c5.1.5.2651 and later","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00469,"percentile":0.409,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2024-02-02T16:03:30Z","modified":"2026-06-17T06:11:59Z","products":[{"vendor":"qnap","product":"qts"},{"vendor":"qnap","product":"quts_hero"},{"vendor":"qnap","product":"qutscloud"},{"vendor":"qnap systems inc.","product":"qts"},{"vendor":"qnap systems inc.","product":"quts hero"},{"vendor":"qnap systems inc.","product":"qutscloud"}],"references":[{"url":"https://www.qnap.com/en/security-advisory/qsa-23-33","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-39303"},{"url":"https://github.com/advisories/GHSA-pg7w-g93j-pc6j"}],"sources":{"cve":[{"id":"CVE-2023-39303","title":"QTS, QuTS hero, QuTScloud","description":"An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.1.3.2578 build 20231110 and later\nQuTS hero h5.1.3.2578 build 20231110 and later\nQuTScloud c5.1.5.2651 and later\n","status":"published","published":"2024-02-02T16:03:30.513Z","modified":"2024-09-06T17:42:19.482Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:35:33.138994Z"}],"euvd":[{"id":"EUVD-2023-43035","description":"An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.1.3.2578 build 20231110 and later\nQuTS hero h5.1.3.2578 build 20231110 and later\nQuTScloud c5.1.5.2651 and later\n","status":"published","published":"2024-02-02T16:03:30Z","modified":"2024-09-06T17:42:19Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T00:56:01.652315Z"}],"ghsa":[{"id":"GHSA-pg7w-g93j-pc6j","title":"An improper authentication vulnerability has been reported to affect several QNAP operating...","description":"An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.1.3.2578 build 20231110 and later\nQuTS hero h5.1.3.2578 build 20231110 and later\nQuTScloud c5.1.5.2651 and later\n","status":"published","published":"2024-02-02T18:30:31Z","modified":"2024-02-02T18:30:31Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:55:32.369456Z"}],"nvd":[{"id":"CVE-2023-39303","description":"An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.1.3.2578 build 20231110 and later\nQuTS hero h5.1.3.2578 build 20231110 and later\nQuTScloud c5.1.5.2651 and later\n","status":"published","published":"2024-02-02T16:15:47.323Z","modified":"2026-06-17T06:11:59.607Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:09:04.527564Z"}]}}