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CVE-2026-20177

Cisco Industrial Ethernet 1000 Series Switches Denial of Service Vulnerability

Published
Last modified
published
Not listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: partial

Summary

A vulnerability in the handling of management plane packets by Cisco Industrial Ethernet (IE) 1000 Series Switches could allow an unauthenticated, remote attacker to cause the device manager, SSH, or API to become inaccessible.This vulnerability is due to insufficient protection against management plane flooding attacks. An attacker could exploit this vulnerability by sending a high rate of ICMP, SSH, or HTTP traffic to an affected device. A successful exploit could allow the attacker to cause the CPU of the device to increase, resulting in a denial of service (DoS) condition on the device manager web GUI, SSH, or API. Data traffic through the device is not affected.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • Cisco Cisco Industrial Ethernet Switches

    1.1, 1.2, 1.8.0, 1.8.2, 1.7.0, 1.3, 1.9.1, 1.6, 1.8.1, 1.9.2, 1.9.2a, 1.9.3, 1.9.4, 1.9.5

References 1

sec.cloudapps.cisco.com