CVE-2026-20167
Cisco IoT Field Network Director Remote Device Denial of Service Vulnerability
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.
Weakness: CWE-284
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco IoT Field Network Director | Network & Security Management | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco IoT Field Network Director (IoT-FND)
Vendor advisory
Cisco IoT Field Network Director Vulnerabilities
Cisco’s rating: High (advisory CVSS 7.7) · Published May 6, 2026
Bug IDs: CSCwm80968 , CSCwm81008 , CSCwm81015
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from