Vulnerability · Published May 6, 2026 · Assigned by cisco
CVE-2026-20167Cisco IoT Field Network Director Remote Device Denial of Service Vulnerability
High 7.7
In plain English
A high-severity improper access control in Cisco IoT Field Network Director (IoT-FND) from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Official 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. 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco IoT Field Network Director (IoT-FND) | 4.5.14.4.34.1.04.1.34.6.14.1.14.4.04.2.0 |
Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H