CVE-2020-24685CWE-789

AC500 V2 unauthenticated crafter packet vulnerability

High · published February 9, 2021

CVSS v3.1
8.6
EPSS
2%
Percentile
75.7
In the wild
Unconfirmed
What it is

An unauthenticated specially crafted packet sent by an attacker over the network will cause a denial-of-service (DoS) vulnerability. Vulnerability allows attacker to stop the PLC. After stopping (ERR LED flashing red), physical access to the PLC is required in order to restart the application. This issue affects: ABB AC500 V2 products with onboard Ethernet version 2.8.4 and prior versions.

The record
Technical detail
CVSS v3.1
8.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01608 · 75.7th percentile
Weakness
CWE-789 · Memory Allocation with Excessive Size Value
Published
2021-02-09T03:57Z
EPSS history
Timeline
  • 09 FEB 03:57Z
    AC500 V2 unauthenticated crafter packet vulnerability
    cvelistv5