{"id":"CVE-2018-19945","aliases":["EUVD-2018-11616","GHSA-xc2v-fcxv-wj59"],"status":"published","title":"Improper Limitation of a Pathname to a Restricted Directory in QTS","description":"A vulnerability has been reported to affect earlier QNAP devices running QTS 4.3.4 to 4.3.6. Caused by improper limitations of a pathname to a restricted directory, this vulnerability allows for renaming arbitrary files on the target system, if exploited. QNAP have already fixed this vulnerability in the following versions: QTS 4.3.6.0895 build 20190328 (and later) QTS 4.3.4.0899 build 20190322 (and later) This issue does not affect QTS 4.4.x or QTS 4.5.x.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01124,"percentile":0.66454,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-22","CWE-284","CWE-73"],"published":"2020-12-31T16:33:27Z","modified":"2026-06-17T01:50:09Z","products":[{"vendor":"qnap","product":"qts"},{"vendor":"qnap systems inc.","product":"qts"}],"references":[{"url":"https://www.qnap.com/zh-tw/security-advisory/qsa-20-21","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-19945"},{"url":"https://github.com/advisories/GHSA-xc2v-fcxv-wj59"}],"sources":{"cve":[{"id":"CVE-2018-19945","title":"Improper Limitation of a Pathname to a Restricted Directory in QTS","description":"A vulnerability has been reported to affect earlier QNAP devices running QTS 4.3.4 to 4.3.6. Caused by improper limitations of a pathname to a restricted directory, this vulnerability allows for renaming arbitrary files on the target system, if exploited. QNAP have already fixed this vulnerability in the following versions: QTS 4.3.6.0895 build 20190328 (and later) QTS 4.3.4.0899 build 20190322 (and later) This issue does not affect QTS 4.4.x or QTS 4.5.x.","status":"published","published":"2020-12-31T16:33:27.917Z","modified":"2024-09-17T02:01:35.778Z","cwes":["CWE-20","CWE-22","CWE-73","CWE-284"],"updated_at":"2026-11-02T14:35:02.966615Z"}],"euvd":[{"id":"EUVD-2018-11616","description":"A vulnerability has been reported to affect earlier QNAP devices running QTS 4.3.4 to 4.3.6. Caused by improper limitations of a pathname to a restricted directory, this vulnerability allows for renaming arbitrary files on the target system, if exploited. QNAP have already fixed this vulnerability in the following versions: QTS 4.3.6.0895 build 20190328 (and later) QTS 4.3.4.0899 build 20190322 (and later) This issue does not affect QTS 4.4.x or QTS 4.5.x.","status":"published","published":"2020-12-31T16:33:27Z","modified":"2024-09-17T02:01:35Z","updated_at":"2026-11-03T00:28:44.385816Z"}],"ghsa":[{"id":"GHSA-xc2v-fcxv-wj59","title":"A vulnerability has been reported to affect earlier QNAP devices running QTS 4.3.4 to 4.3.6....","description":"A vulnerability has been reported to affect earlier QNAP devices running QTS 4.3.4 to 4.3.6. Caused by improper limitations of a pathname to a restricted directory, this vulnerability allows for renaming arbitrary files on the target system, if exploited. QNAP have already fixed this vulnerability in the following versions: QTS 4.3.6.0895 build 20190328 (and later) QTS 4.3.4.0899 build 20190322 (and later) This issue does not affect QTS 4.4.x or QTS 4.5.x.","status":"published","published":"2022-05-24T17:37:33Z","modified":"2023-01-29T05:04:52Z","cwes":["CWE-22"],"updated_at":"2026-11-02T14:45:39.783328Z"}],"nvd":[{"id":"CVE-2018-19945","description":"A vulnerability has been reported to affect earlier QNAP devices running QTS 4.3.4 to 4.3.6. Caused by improper limitations of a pathname to a restricted directory, this vulnerability allows for renaming arbitrary files on the target system, if exploited. QNAP have already fixed this vulnerability in the following versions: QTS 4.3.6.0895 build 20190328 (and later) QTS 4.3.4.0899 build 20190322 (and later) This issue does not affect QTS 4.4.x or QTS 4.5.x.","status":"published","published":"2020-12-31T17:15:12.51Z","modified":"2026-06-17T01:50:09.69Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":8.5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-20","CWE-22","CWE-73","CWE-284"],"updated_at":"2026-11-02T14:05:00.03074Z"}]}}