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MEDIUM

Cisco Industrial Ethernet 1000 Series Switches Denial of Service Vulnerability

Published Aug 19, 2026

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.

Affected products

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-770

Allocation of Resources Without Limits

References (2)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner cisco
Published Aug 19, 2026
Updated Aug 20, 2026
Reserved Oct 8, 2025
Link CVE-2026-20177
CISA Vulnrichment
Updated Aug 20, 2026
NVD
Status Awaiting Analysis
Modified Aug 20, 2026
Link CVE-2026-20177
Red Hat
Severity n/a
Public date n/a
Links CVE-2026-20177
ENISA EUVD
Assigner cisco
Published Aug 19, 2026
Updated Aug 20, 2026
Exploited since n/a
Link EUVD-2026-62559
EUVD-2026-62559