PT-2026-37650 · Cisco · Cisco Iot Field Network Director

Published 2026-05-06 · Updated 2026-05-06 · CVE-2026-20167

NVD

CVSS v3.1

7.7

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

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.

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

CVE-2026-20167

Affected Products

Cisco Iot Field Network Director

References · 2

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iot-fnd-dos-n8N26Q4u · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20167 · Security Note