{"id":"CVE-2021-1543","aliases":["EUVD-2021-7010","GHSA-m9xj-cg7r-3q86"],"status":"published","title":"Cisco Small Business 220 Series Smart Switches Vulnerabilities","description":"Multiple vulnerabilities in the web-based management interface of Cisco Small Business 220 Series Smart Switches could allow an attacker to do the following: Hijack a user session Execute arbitrary commands as a root user on the underlying operating system Conduct a cross-site scripting (XSS) attack Conduct an HTML injection attack For more information about these vulnerabilities, see the Details section of this advisory.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0932,"percentile":0.95418,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287","CWE-79"],"published":"2021-06-16T17:45:46Z","modified":"2026-06-17T03:32:01Z","products":[{"vendor":"cisco","product":"cisco small business 220 series smart plus switches"},{"vendor":"cisco","product":"sf220-24_firmware"},{"vendor":"cisco","product":"sf220-24p_firmware"},{"vendor":"cisco","product":"sf220-48_firmware"},{"vendor":"cisco","product":"sf220-48p_firmware"},{"vendor":"cisco","product":"sg220-26_firmware"},{"vendor":"cisco","product":"sg220-26p_firmware"},{"vendor":"cisco","product":"sg220-28mp_firmware"},{"vendor":"cisco","product":"sg220-50_firmware"},{"vendor":"cisco","product":"sg220-50p_firmware"}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ciscosb-multivulns-Wwyb7s5E","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-1543"},{"url":"https://github.com/advisories/GHSA-m9xj-cg7r-3q86"}],"sources":{"cve":[{"id":"CVE-2021-1543","title":"Cisco Small Business 220 Series Smart Switches Vulnerabilities","description":"Multiple vulnerabilities in the web-based management interface of Cisco Small Business 220 Series Smart Switches could allow an attacker to do the following: Hijack a user session Execute arbitrary commands as a root user on the underlying operating system Conduct a cross-site scripting (XSS) attack Conduct an HTML injection attack For more information about these vulnerabilities, see the Details section of this advisory.","status":"published","published":"2021-06-16T17:45:46.371Z","modified":"2024-11-07T22:08:03.454Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:33:08.811269Z"}],"euvd":[{"id":"EUVD-2021-7010","description":"Multiple vulnerabilities in the web-based management interface of Cisco Small Business 220 Series Smart Switches could allow an attacker to do the following: Hijack a user session Execute arbitrary commands as a root user on the underlying operating system Conduct a cross-site scripting (XSS) attack Conduct an HTML injection attack For more information about these vulnerabilities, see the Details section of this advisory.","status":"published","published":"2021-06-16T17:45:46Z","modified":"2024-11-07T22:08:03Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:05:06.878478Z"}],"ghsa":[{"id":"GHSA-m9xj-cg7r-3q86","title":"Multiple vulnerabilities in the web-based management interface of Cisco Small Business 220 Series...","description":"Multiple vulnerabilities in the web-based management interface of Cisco Small Business 220 Series Smart Switches could allow an attacker to do the following: Hijack a user session Execute arbitrary commands as a root user on the underlying operating system Conduct a cross-site scripting (XSS) attack Conduct an HTML injection attack For more information about these vulnerabilities, see the Details section of this advisory.","status":"published","published":"2022-05-24T19:05:26Z","modified":"2023-01-29T05:07:02Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79","CWE-287"],"updated_at":"2026-11-02T14:46:08.233339Z"}],"nvd":[{"id":"CVE-2021-1543","description":"Multiple vulnerabilities in the web-based management interface of Cisco Small Business 220 Series Smart Switches could allow an attacker to do the following: Hijack a user session Execute arbitrary commands as a root user on the underlying operating system Conduct a cross-site scripting (XSS) attack Conduct an HTML injection attack For more information about these vulnerabilities, see the Details section of this advisory.","status":"published","published":"2021-06-16T18:15:08.59Z","modified":"2026-06-17T03:32:01.213Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-287","CWE-79"],"updated_at":"2026-11-02T14:06:54.892562Z"}]}}