{"id":"CVE-2021-28803","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-28803","generatedAt":"2026-10-27T23:30:01.349Z","title":"This issue affects: QNAP Systems Inc.","description":"This issue affects: QNAP Systems Inc. Q'center versions prior to 1.11.1004.","published":"2021-07-01T02:15:07.000Z","lastModified":"2026-06-17T03:46:54.000Z","status":"Modified","sourceIdentifier":"security@qnapsecurity.com.tw","cvss":{"version":"3.1","score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-80","CWE-79"],"affected":["qnap/q\\'center"],"epss":{"score":0.00466,"percentile":0.4008,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.47%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.qnap.com/zh-tw/security-advisory/qsa-21-31","tags":["Vendor Advisory"],"source":"security@qnapsecurity.com.tw"},{"url":"https://www.qnap.com/zh-tw/security-advisory/qsa-21-31","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-28803","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}