PT-2020-11217 · Schneider Electric · Modicon M580+3

Published 2020-01-06 · Updated 2026-05-29 · CVE-2019-6857

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Modicon M580 (affected versions not specified) Modicon M340 (affected versions not specified) Modicon Quantum (affected versions not specified) Modicon Premium (affected versions not specified)

Description A vulnerability exists that could cause a Denial of Service of the controller when reading specific memory blocks using Modbus TCP. This issue is related to improper checks for unusual or exceptional conditions.

Recommendations For Modicon M580, refer to the security notification for specific guidance on resolving the issue. For Modicon M340, refer to the security notification for specific guidance on resolving the issue. For Modicon Quantum, refer to the security notification for specific guidance on resolving the issue. For Modicon Premium, refer to the security notification for specific guidance on resolving the issue. As a temporary workaround, consider restricting access to Modbus TCP to minimize the risk of exploitation.

Fix

DoS

Improper Check for Exceptional Conditions

Weakness Enumeration

CWE-754

Related Identifiers

CVE-2019-6857

Affected Products

Modicon M340

Modicon M580

Modicon Premium

Modicon Quantum

References · 5

• https://se.com/ww/en/download/document/SEVD-2019-344-01 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-6857 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-6857 · Security Note
• https://t.me/cveNotify/165217 · Telegram Post
• https://us-cert.gov/ics/advisories/icsa-20-016-01 · Note