CVE-2021-33541CWE-770

Phoenix Contact: ILC1x Industrial controllers affected by Denial-of-Service vulnerability

High · published June 25, 2021

CVSS v3.1
7.5
EPSS
1%
Percentile
73.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01493 · 73.9th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2021-06-25T18:26Z
EPSS history
Timeline
  • 25 JUN 18:26Z
    Phoenix Contact: ILC1x Industrial controllers affected by Denial-of-Service vulnerability
    cvelistv5