CVE-2020-24685

AC500 V2 unauthenticated crafter packet vulnerability

State: Published
Severity: 8.6 High
Published: Feb 9, 2021
Updated: Aug 4, 2024
Reserved: Aug 26, 2020

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.6 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	ABB

Weaknesses

CWE-789 Memory Allocation with Excessive Size Value

Affected Products

Product	Versions
AC500 V2 products with onboard EthernetABB	version 2.8.4 and prior versionsAffected

References

https://search.abb.com/library/Download.aspx?DocumentID=3ADR010667&LanguageCode=en&DocumentPartId=&Action=Launch

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.