AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

CiscoCVE-2026-20177

Cisco Industrial Ethernet Switches: denial of service

Cisco

CVE-2026-20177 · Published Aug 19, 2026 · updated Aug 20, 2026

Medium5.3
No fix yet
Cisco advisory

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

PackageAffectedFixed in
Cisco Industrial Ethernet Switches
Product
<= 1.1No fix yet
<= 1.2No fix yet
<= 1.8.0No fix yet
<= 1.8.2No fix yet
Details and references

More Cisco advisories

All Cisco