CiscoCVE-2026-20177
Cisco Industrial Ethernet Switches: denial of service
No fix yet
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 versions
| Package | Affected | Fixed in |
|---|---|---|
| Cisco Industrial Ethernet Switches Product | <= 1.1 | No fix yet |
| <= 1.2 | No fix yet | |
| <= 1.8.0 | No fix yet | |
| <= 1.8.2 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-770