CVE-2026-20167Cisco IoT Field Network Director Remote Device Denial of Service Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Cisco IoT Field Network Director (IoT-FND) and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 7.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- Weakness (CWE)
- CWE-284
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- cisco
- NVD analysis
- Analyzed
- Record last updated
- May 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Cisco Cisco IoT Field Network Director (IoT-FND) cisco:iot_field_network_director_iot_fnd (from the name) | 4.5.1; 4.4.3; 4.1.0; 4.1.3; 4.6.1; 4.1.1; 4.4.0; 4.2.0; and 22 more ranges | CNA record |
cisco iot_field_network_director cisco:iot_field_network_director | before 5.0.0-117 | NVD |
References
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iot-fnd-dos-n8N26Q4uvendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.