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TI-2020-02724 Aliases CVE-2020-3162GHSA-qwp9-wc7v-7pg4

Cisco IoT Field Network Director Denial of Service Vulnerability

Priority MEDIUM 42CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A vulnerability in the Constrained Application Protocol (CoAP) implementation of Cisco IoT Field Network Director could allow an unauthenticated remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation of incoming CoAP traffic. An attacker could exploit this vulnerability by sending a malformed CoAP packet to an affected device. A successful exploit could allow the attacker to force the CoAP server to stop, interrupting communication to the IoT endpoints.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01707 77th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco IoT Field Network Director (IoT-FND)all versions—No fix listedCNA
  • Cisco IoT Field Network Director (IoT-FND) VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cisco:iot_field_network_director:*:*:*:*:*:*:*:*before 4.6.0VulnerableCisco
  • cpe:2.3:a:cisco:iot_field_network_director:*:*:*:*:*:*:*:* Versions before 4.6.0 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-3162
  2. 2026-10-03 Alias added: GHSA-qwp9-wc7v-7pg4

References

Advisory 1

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2020-03077 Cisco IoT Field Network Director Unauthenticated REST API Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2019-01577 Cisco IoT Field Network Director TLS Renegotiation Denial of Service Vulnerability CVSS 3.1HIGH 7.5
  • TI-2019-01270 Cisco IoT Field Network Director Resource Exhaustion Denial of Service Vulnerability CVSS 3.1HIGH 7.5
  • TI-2020-15928 Cisco IoT Field Network Director Information Disclosure Vulnerability CVSS 3.1HIGH 7.5
  • TI-2020-15924 Cisco IoT Field Network Director SOAP API Authorization Bypass Vulnerability CVSS 3.1HIGH 8.7
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences