{"id":"CVE-2021-28801","aliases":["EUVD-2021-15457","GHSA-f65j-5m47-6qgq"],"status":"published","title":"Out-of-Bounds Read Vulnerability in QSS","description":"An out-of-bounds read vulnerability has been reported to affect certain QNAP switches running QSS. If exploited, this vulnerability allows attackers to read sensitive information on the system. This issue affects: QNAP Systems Inc. QSS versions prior to 1.0.2 build 20210122 on QSW-M2108-2C; versions prior to 1.0.2 build 20210122 on QSW-M2108-2S; versions prior to 1.0.2 build 20210122 on QSW-M2108R-2C.","severity":{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00749,"percentile":0.55212,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2021-06-11T06:35:14Z","modified":"2026-06-17T03:46:53Z","products":[{"vendor":"qnap","product":"qss"},{"vendor":"qnap systems inc.","product":"qss"}],"references":[{"url":"https://www.qnap.com/zh-tw/security-advisory/qsa-21-23","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-28801"},{"url":"https://github.com/advisories/GHSA-f65j-5m47-6qgq"}],"sources":{"cve":[{"id":"CVE-2021-28801","title":"Out-of-Bounds Read Vulnerability in QSS","description":"An out-of-bounds read vulnerability has been reported to affect certain QNAP switches running QSS. If exploited, this vulnerability allows attackers to read sensitive information on the system. This issue affects: QNAP Systems Inc. QSS versions prior to 1.0.2 build 20210122 on QSW-M2108-2C; versions prior to 1.0.2 build 20210122 on QSW-M2108-2S; versions prior to 1.0.2 build 20210122 on QSW-M2108R-2C.","status":"published","published":"2021-06-11T06:35:14.369Z","modified":"2024-09-17T00:06:25.17Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:33:08.811269Z"}],"euvd":[{"id":"EUVD-2021-15457","description":"An out-of-bounds read vulnerability has been reported to affect certain QNAP switches running QSS. If exploited, this vulnerability allows attackers to read sensitive information on the system. This issue affects: QNAP Systems Inc. QSS versions prior to 1.0.2 build 20210122 on QSW-M2108-2C; versions prior to 1.0.2 build 20210122 on QSW-M2108-2S; versions prior to 1.0.2 build 20210122 on QSW-M2108R-2C.","status":"published","published":"2021-06-11T06:35:14Z","modified":"2024-09-17T00:06:25Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-03T00:29:01.977589Z"}],"ghsa":[{"id":"GHSA-f65j-5m47-6qgq","title":"An out-of-bounds read vulnerability has been reported to affect certain QNAP switches running QSS...","description":"An out-of-bounds read vulnerability has been reported to affect certain QNAP switches running QSS. If exploited, this vulnerability allows attackers to read sensitive information on the system. This issue affects: QNAP Systems Inc. QSS versions prior to 1.0.2 build 20210122 on QSW-M2108-2C; versions prior to 1.0.2 build 20210122 on QSW-M2108-2S; versions prior to 1.0.2 build 20210122 on QSW-M2108R-2C.","status":"published","published":"2022-05-24T19:05:12Z","modified":"2023-01-29T05:06:59Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:46:07.768849Z"}],"nvd":[{"id":"CVE-2021-28801","description":"An out-of-bounds read vulnerability has been reported to affect certain QNAP switches running QSS. If exploited, this vulnerability allows attackers to read sensitive information on the system. This issue affects: QNAP Systems Inc. QSS versions prior to 1.0.2 build 20210122 on QSW-M2108-2C; versions prior to 1.0.2 build 20210122 on QSW-M2108-2S; versions prior to 1.0.2 build 20210122 on QSW-M2108R-2C.","status":"published","published":"2021-06-11T07:15:06.49Z","modified":"2026-06-17T03:46:53.3Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:06:54.439974Z"}]}}