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

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

Positive Technologies (AI Summary)

CVSS v3.1

7.7

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco IoT Field Network Director (affected versions not specified)

Description Improper error handling in the web-based management interface allows an authenticated remote attacker with low privileges to cause a denial of service (DoS) condition on a remotely managed router. By submitting crafted input to the interface, an attacker can request unauthorized files from a remote router, triggering a router reload.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

BDU:2026-06547

CVE-2026-20167

Affected Products

Iot Field Network Director

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-20167 · Security Note
• https://bdu.fstec.ru/vul/2026-06547 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iot-fnd-dos-n8N26Q4u · Vendor Advisory
• https://twitter.com/CVEnew/status/2052086716878794878 · Twitter Post