Medium [CVE-2026-20177] Cisco Industrial Ethernet 1000 Series Switches Denial of Service Vulnerability
This medium-severity Cisco advisory covers CVE-2026-20177 affecting Industrial Ethernet Switches.
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Summary
An unauthenticated remote attacker could exploit a flaw in the handling of management plane packets by Cisco Industrial Ethernet (IE) 1000 Series Switches to cause the device manager, SSH, or API to become inaccessible. The flaw is caused by insufficient protection against management plane flooding attacks.
Affected product named by the advisory: Industrial Ethernet Switches.
- Scope: At the time of publication, this vulnerability affected Cisco IE 1000 Series Switches, regardless of device configuration.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
Mitigation checklist
- There are no workarounds that address this vulnerability.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
Discussion(0)
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