CVE-2020-24685 HIGH

CVE-2020-24685: AC500 V2 unauthenticated crafter packet vulnerability

Vendor Abb
Product AC500 V2 products with onboard Ethernet
Weakness CWE-789
Published February 9, 2021
Last update August 4, 2024
View on NVD All CVEs

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 9, 2021 CVE published
August 4, 2024 Record updated

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