{"id":"CVE-2020-3121","aliases":["EUVD-2020-24392","GHSA-p382-hh5c-h4rq"],"status":"published","title":"Cisco Small Business Smart and Managed Switches Cross-Site Scripting Vulnerability","description":"A vulnerability in the web-based management interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a malicious link and access a specific page. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.","severity":{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01066,"percentile":0.64991,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2020-01-26T04:31:22Z","modified":"2026-06-17T03:17:23Z","products":[{"vendor":"cisco","product":"cisco 550x series stackable managed switches"},{"vendor":"cisco","product":"sf350-48_firmware"},{"vendor":"cisco","product":"sf350-48mp_firmware"},{"vendor":"cisco","product":"sf350-48p_firmware"},{"vendor":"cisco","product":"sf550x-24_firmware"},{"vendor":"cisco","product":"sf550x-24p_firmware"},{"vendor":"cisco","product":"sf550x-48_firmware"},{"vendor":"cisco","product":"sf550x-48mp_firmware"},{"vendor":"cisco","product":"sf550x-48p_firmware"},{"vendor":"cisco","product":"sg250-08_firmware"},{"vendor":"cisco","product":"sg250-08hp_firmware"},{"vendor":"cisco","product":"sg250-10p_firmware"},{"vendor":"cisco","product":"sg250-18_firmware"},{"vendor":"cisco","product":"sg250-24_firmware"},{"vendor":"cisco","product":"sg250-24p_firmware"},{"vendor":"cisco","product":"sg250-26_firmware"},{"vendor":"cisco","product":"sg250-26hp_firmware"},{"vendor":"cisco","product":"sg250-26p_firmware"},{"vendor":"cisco","product":"sg250-48_firmware"},{"vendor":"cisco","product":"sg250-48hp_firmware"},{"vendor":"cisco","product":"sg250-50_firmware"},{"vendor":"cisco","product":"sg250-50hp_firmware"},{"vendor":"cisco","product":"sg250-50p_firmware"},{"vendor":"cisco","product":"sg250x-24_firmware"},{"vendor":"cisco","product":"sg250x-24p_firmware"},{"vendor":"cisco","product":"sg250x-48_firmware"},{"vendor":"cisco","product":"sg250x-48p_firmware"},{"vendor":"cisco","product":"sg350-10_firmware"},{"vendor":"cisco","product":"sg350-10mp_firmware"},{"vendor":"cisco","product":"sg350-10p_firmware"},{"vendor":"cisco","product":"sg350-28_firmware"},{"vendor":"cisco","product":"sg350-28mp_firmware"},{"vendor":"cisco","product":"sg350-28p_firmware"},{"vendor":"cisco","product":"sg355-10mp_firmware"},{"vendor":"cisco","product":"sg550x-24_firmware"},{"vendor":"cisco","product":"sg550x-24mp_firmware"},{"vendor":"cisco","product":"sg550x-24mpp_firmware"},{"vendor":"cisco","product":"sg550x-24p_firmware"},{"vendor":"cisco","product":"sg550x-48_firmware"},{"vendor":"cisco","product":"sg550x-48mp_firmware"},{"vendor":"cisco","product":"sg550x-48p_firmware"},{"vendor":"cisco","product":"sx550x-12ft_firmware"},{"vendor":"cisco","product":"sx550x-16ft_firmware"},{"vendor":"cisco","product":"sx550x-24_firmware"},{"vendor":"cisco","product":"sx550x-24ft_firmware"},{"vendor":"cisco","product":"sx550x-52_firmware"}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-sbsms-xss","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-3121"},{"url":"https://github.com/advisories/GHSA-p382-hh5c-h4rq"}],"sources":{"cve":[{"id":"CVE-2020-3121","title":"Cisco Small Business Smart and Managed Switches Cross-Site Scripting Vulnerability","description":"A vulnerability in the web-based management interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a malicious link and access a specific page. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.","status":"published","published":"2020-01-26T04:31:22.955Z","modified":"2024-11-15T17:45:38.991Z","cvss":[{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:51.923913Z"}],"euvd":[{"id":"EUVD-2020-24392","description":"A vulnerability in the web-based management interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a malicious link and access a specific page. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.","status":"published","published":"2020-01-26T04:31:22Z","modified":"2024-11-15T17:45:38Z","cvss":[{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T00:04:58.20762Z"}],"ghsa":[{"id":"GHSA-p382-hh5c-h4rq","title":"A vulnerability in the web-based management interface of Cisco Small Business Smart and Managed...","description":"A vulnerability in the web-based management interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a malicious link and access a specific page. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.","status":"published","published":"2022-05-24T17:07:22Z","modified":"2023-01-29T05:01:12Z","updated_at":"2026-11-02T14:44:45.404949Z"}],"nvd":[{"id":"CVE-2020-3121","description":"A vulnerability in the web-based management interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a malicious link and access a specific page. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.","status":"published","published":"2020-01-26T05:15:17.397Z","modified":"2026-06-17T03:17:23.58Z","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","assessor":"primary"},{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"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-79"],"updated_at":"2026-11-02T14:05:52.385274Z"}]}}