{"id":"CVE-2026-20167","title":"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 d…","summary":"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 d…","severity":"high","cvss":7.7,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","cwe":["CWE-284"],"vendor":"cisco","product":"iot_field_network_director","affected":["iot_field_network_director < 5.0.0-117"],"patched":["iot_field_network_director 5.0.0-117"],"published":"2026-05-06","updated":"2026-06-30","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-20167","references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iot-fnd-dos-n8N26Q4u","label":"psirt@cisco.com"}],"tags":["nvd"],"epss":0.00272,"epssPercentile":0.19866,"ingestedAt":"2026-07-01T09:50:45.535Z","slug":"CVE-2026-20167","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `iot_field_network_director < 5.0.0-117`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `iot_field_network_director 5.0.0-117`","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":42.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}