{"id":"CVE-2026-20167","aliases":["EUVD-2026-27850","GHSA-48h9-c48p-4x99"],"status":"published","title":"Cisco IoT Field Network Director Remote Device Denial of Service Vulnerability","description":"A vulnerability in the web-based management interface of Cisco IoT Field Network Director could allow an authenticated, remote attacker with low privileges to cause a DoS condition on a remotely managed router.\r\n\r\nThis vulnerability is due to improper error handling. An attacker could exploit this vulnerability by submitting crafted input to the web-based management interface. A successful exploit could allow the attacker to request unauthorized files from a remote router, causing the router to reload and resulting in a DoS condition.","severity":{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00272,"percentile":0.19836,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2026-05-06T16:15:57Z","modified":"2026-10-26T19:10:00Z","products":[{"vendor":"cisco","product":"cisco iot field network director (iot-fnd)"},{"vendor":"cisco","product":"iot_field_network_director"}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iot-fnd-dos-n8N26Q4u","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20167"},{"url":"https://github.com/advisories/GHSA-48h9-c48p-4x99"}],"sources":{"cve":[{"id":"CVE-2026-20167","title":"Cisco IoT Field Network Director Remote Device Denial of Service Vulnerability","description":"A vulnerability in the web-based management interface of Cisco IoT Field Network Director could allow an authenticated, remote attacker with low privileges to cause a DoS condition on a remotely managed router.\r\n\r\nThis vulnerability is due to improper error handling. An attacker could exploit this vulnerability by submitting crafted input to the web-based management interface. A successful exploit could allow the attacker to request unauthorized files from a remote router, causing the router to reload and resulting in a DoS condition.","status":"published","published":"2026-05-06T16:15:57.113Z","modified":"2026-05-06T17:26:01.173Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T13:35:33.380441Z"}],"euvd":[{"id":"EUVD-2026-27850","description":"A vulnerability in the web-based management interface of Cisco IoT Field Network Director could allow an authenticated, remote attacker with low privileges to cause a DoS condition on a remotely managed router.\r\n\r\nThis vulnerability is due to improper error handling. An attacker could exploit this vulnerability by submitting crafted input to the web-based management interface. A successful exploit could allow the attacker to request unauthorized files from a remote router, causing the router to reload and resulting in a DoS condition.","status":"published","published":"2026-05-06T16:15:57Z","modified":"2026-05-06T17:26:01Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T19:05:16.191098Z"}],"ghsa":[{"id":"GHSA-48h9-c48p-4x99","title":"A vulnerability in the web-based management interface of Cisco IoT Field Network Director could...","description":"A vulnerability in the web-based management interface of Cisco IoT Field Network Director could allow an authenticated, remote attacker with low privileges to cause a DoS condition on a remotely managed router.\n\nThis vulnerability is due to improper error handling. An attacker could exploit this vulnerability by submitting crafted input to the web-based management interface. A successful exploit could allow the attacker to request unauthorized files from a remote router, causing the router to reload and resulting in a DoS condition.","status":"published","published":"2026-05-06T18:30:31Z","modified":"2026-05-06T18:30:42Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:07:55.247215Z"}],"nvd":[{"id":"CVE-2026-20167","description":"A vulnerability in the web-based management interface of Cisco IoT Field Network Director could allow an authenticated, remote attacker with low privileges to cause a DoS condition on a remotely managed router.\r\n\r\nThis vulnerability is due to improper error handling. An attacker could exploit this vulnerability by submitting crafted input to the web-based management interface. A successful exploit could allow the attacker to request unauthorized files from a remote router, causing the router to reload and resulting in a DoS condition.","status":"published","published":"2026-05-06T17:16:20.433Z","modified":"2026-10-26T19:10:00.163Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:12:17.418622Z"}]}}