{"id":"CVE-2020-3431","aliases":["EUVD-2020-24702","GHSA-x469-9qwg-89hw"],"status":"published","title":"Cisco Small Business RV Series Routers Cross-Site Scripting Vulnerability","description":"A vulnerability in the web-based management interface of Cisco\u0026nbsp;Small Business RV042 Dual WAN VPN Routers and Cisco\u0026nbsp;Small Business RV042G Dual Gigabit WAN VPN Routers could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device.\r\nThe vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. 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.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.","severity":{"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/RL:X/RC:X/E:X","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0047,"percentile":0.40968,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2024-11-18T16:02:42Z","modified":"2026-06-17T03:18:15Z","products":[{"vendor":"cisco","product":"cisco small business rv series router firmware"}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sa-rv-routers-xss-K7Z5U6q3"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-3431"},{"url":"https://github.com/advisories/GHSA-x469-9qwg-89hw"}],"sources":{"cve":[{"id":"CVE-2020-3431","title":"Cisco Small Business RV Series Routers Cross-Site Scripting Vulnerability","description":"A vulnerability in the web-based management interface of Cisco\u0026nbsp;Small Business RV042 Dual WAN VPN Routers and Cisco\u0026nbsp;Small Business RV042G Dual Gigabit WAN VPN Routers could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device.\r\nThe vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. 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.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.","status":"published","published":"2024-11-18T16:02:42.393Z","modified":"2024-11-18T16:32:56.721Z","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/RL:X/RC:X/E:X","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:52.268457Z"}],"euvd":[{"id":"EUVD-2020-24702","description":"A vulnerability in the web-based management interface of Cisco\u0026nbsp;Small Business RV042 Dual WAN VPN Routers and Cisco\u0026nbsp;Small Business RV042G Dual Gigabit WAN VPN Routers could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device.\r\nThe vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. 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.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.","status":"published","published":"2024-11-18T16:02:42Z","modified":"2024-11-18T16:32:56Z","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/RL:X/RC:X/E:X","level":"medium"}],"updated_at":"2026-11-03T00:04:57.054288Z"}],"ghsa":[{"id":"GHSA-x469-9qwg-89hw","title":"A vulnerability in the web-based management interface of Cisco\u0026nbsp;Small Business RV042 Dual WAN...","description":"A vulnerability in the web-based management interface of Cisco\u0026nbsp;Small Business RV042 Dual WAN VPN Routers and Cisco\u0026nbsp;Small Business RV042G Dual Gigabit WAN VPN Routers could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device.\nThe vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. 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.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.","status":"published","published":"2024-11-18T18:30:56Z","modified":"2024-11-18T18:31:05Z","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"],"updated_at":"2026-11-02T14:58:52.476096Z"}],"nvd":[{"id":"CVE-2020-3431","description":"A vulnerability in the web-based management interface of Cisco\u0026nbsp;Small Business RV042 Dual WAN VPN Routers and Cisco\u0026nbsp;Small Business RV042G Dual Gigabit WAN VPN Routers could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device.\r\nThe vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. 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.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.","status":"published","published":"2024-11-18T16:15:06.897Z","modified":"2026-06-17T03:18:15.79Z","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":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:48.591569Z"}]}}