CVE-2026-20167

[CVE catalog]

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. This 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

High · CVSS 7.7CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Published

May 6, 2026, 5:16:20 PM UTC

Source

[NVD] · [CVE record]

EPSS

0.27% · Oct 27, 2026

{
  "package_releases": [],
  "fixed_versions": [],
  "distribution_packages": [
    {
      "name": "iot_field_network_director",
      "ecosystem": "cpe",
      "fixed_version": "5.0.0-117"
    },
    {
      "name": "iot_field_network_director",
      "ranges": [
        {
          "fixed": "5.0.0-117",
          "introduced": "",
          "last_affected": "",
          "start_excluding": ""
        }
      ],
      "ecosystem": "cpe",
      "fixed_version": "5.0.0-117",
      "provider_record_id": "NVD-CVE-2026-20167"
    }
  ]
}