{"id":"CVE-2023-20218","aliases":["EUVD-2023-24397","GHSA-8397-p27v-5qrr"],"status":"published","title":"A vulnerability in web-based management interface of Cisco SPA500 Series Analog Telephone...","description":"A vulnerability in web-based management interface of Cisco SPA500 Series Analog Telephone Adapters (ATAs) could allow an authenticated, remote attacker to to modify a web page in the context of a user's browser.\r\n\r This 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 to click a crafted link. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious websites, or the attacker could use this vulnerability to conduct further client-side attacks.\r\n\r Cisco will not release software updates that address this vulnerability.  \r\n\r  {{value}} [\"%7b%7bvalue%7d%7d\"])}]]","severity":{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00453,"percentile":0.39662,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79","CWE-80"],"published":"2023-08-03T21:20:29Z","modified":"2026-06-17T05:29:56Z","products":[{"vendor":"cisco","product":"cisco small business ip phones"},{"vendor":"cisco","product":"spa500ds_firmware"},{"vendor":"cisco","product":"spa500s_firmware"},{"vendor":"cisco","product":"spa501g_firmware"},{"vendor":"cisco","product":"spa502g_firmware"},{"vendor":"cisco","product":"spa504g_firmware"},{"vendor":"cisco","product":"spa508g_firmware"},{"vendor":"cisco","product":"spa509g_firmware"},{"vendor":"cisco","product":"spa512g_firmware"},{"vendor":"cisco","product":"spa514g_firmware"},{"vendor":"cisco","product":"spa525_firmware"},{"vendor":"cisco","product":"spa525g2_firmware"},{"vendor":"cisco","product":"spa525g_firmware"}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-spa-web-multi-7kvPmu2F","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-20218"},{"url":"https://github.com/advisories/GHSA-8397-p27v-5qrr"}],"sources":{"cve":[{"id":"CVE-2023-20218","description":"A vulnerability in web-based management interface of Cisco SPA500 Series Analog Telephone Adapters (ATAs) could allow an authenticated, remote attacker to to modify a web page in the context of a user's browser.\r\n\r This 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 to click a crafted link. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious websites, or the attacker could use this vulnerability to conduct further client-side attacks.\r\n\r Cisco will not release software updates that address this vulnerability.  \r\n\r  {{value}} [\"%7b%7bvalue%7d%7d\"])}]]","status":"published","published":"2023-08-03T21:20:29.588Z","modified":"2024-10-17T14:59:14.948Z","cvss":[{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-80"],"updated_at":"2026-11-02T14:35:13.368958Z"}],"euvd":[{"id":"EUVD-2023-24397","description":"A vulnerability in web-based management interface of Cisco SPA500 Series Analog Telephone Adapters (ATAs) could allow an authenticated, remote attacker to to modify a web page in the context of a user's browser.\r\n\r This 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 to click a crafted link. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious websites, or the attacker could use this vulnerability to conduct further client-side attacks.\r\n\r Cisco will not release software updates that address this vulnerability.  \r\n\r  {{value}} [\"%7b%7bvalue%7d%7d\"])}]]","status":"published","published":"2023-08-03T21:20:29Z","modified":"2024-10-17T14:59:14Z","cvss":[{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T00:27:34.339903Z"}],"ghsa":[{"id":"GHSA-8397-p27v-5qrr","title":"A vulnerability in web-based management interface of Cisco SPA500 Series Analog Telephone...","description":"A vulnerability in web-based management interface of Cisco SPA500 Series Analog Telephone Adapters (ATAs) could allow an authenticated, remote attacker to to modify a web page in the context of a user's browser.\n\n This 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 to click a crafted link. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious websites, or the attacker could use this vulnerability to conduct further client-side attacks.\n\n Cisco will not release software updates that address this vulnerability.  \n\n  {{value}} [\"%7b%7bvalue%7d%7d\"])}]]","status":"published","published":"2023-08-04T00:30:15Z","modified":"2024-02-03T05:06:20Z","cvss":[{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-79","CWE-80"],"updated_at":"2026-11-02T14:55:32.369456Z"}],"nvd":[{"id":"CVE-2023-20218","description":"A vulnerability in web-based management interface of Cisco SPA500 Series Analog Telephone Adapters (ATAs) could allow an authenticated, remote attacker to to modify a web page in the context of a user's browser.\r\n\r This 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 to click a crafted link. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious websites, or the attacker could use this vulnerability to conduct further client-side attacks.\r\n\r Cisco will not release software updates that address this vulnerability.  \r\n\r  {{value}} [\"%7b%7bvalue%7d%7d\"])}]]","status":"published","published":"2023-08-03T22:15:11.77Z","modified":"2026-06-17T05:29:56.88Z","cvss":[{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"medium","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"}],"cwes":["CWE-80","CWE-79"],"updated_at":"2026-11-02T14:08:20.798312Z"}]}}