Riskcovery

CVE-2026-20177

Cisco Industrial Ethernet 1000 Series Switches Denial of Service Vulnerability

State
Published
Severity
5.3 Medium
Published
Aug 19, 2026
Updated
Aug 20, 2026
Reserved
Oct 8, 2025

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.15.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lcisco

Weaknesses

  • CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

ProductVersions
Cisco Industrial Ethernet SwitchesCisco
  • 1.1Affected
  • 1.2Affected
  • 1.8.0Affected
  • 1.8.2Affected
  • 1.7.0Affected
  • 1.3Affected
  • 1.9.1Affected
  • 1.6Affected
  • 1.8.1Affected
  • 1.9.2Affected
  • 1.9.2aAffected
  • 1.9.3Affected
  • 1.9.4Affected
  • 1.9.5Affected

References

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