Description
Phoenix Contact Classic Line Controllers ILC1x0 and ILC1x1 in all versions/variants are affected by a Denial-of-Service vulnerability. The communication protocols and device access do not feature authentication measures. Remote attackers can use specially crafted IP packets to cause a denial of service on the PLC's network communication module. A successful attack stops all network communication. To restore the network connectivity the device needs to be restarted. The automation task is not affected.
References (1)
Core 1
Core References
Third Party Advisory x_refsource_confirm
https://cert.vde.com/en-us/advisories/vde-2021-019
Scores
CVSS v3
7.5
EPSS
0.0149
EPSS Percentile
70.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-770
Status
published
Products (2)
phoenixcontact/ilc1x0_firmware
phoenixcontact/ilc1x1_firmware
Published
Jun 25, 2021
Tracked Since
Feb 18, 2026