PT-2020-19625 · Schneider Electric · Modicon Quantum+2

Published 2020-12-11 · Updated 2026-05-28 · CVE-2020-7549

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 M340 versions (affected versions not specified) Modicon Quantum versions (affected versions not specified) Modicon Premium versions (affected versions not specified)

Description A vulnerability exists in the Web Server of the affected devices, which could cause denial of HTTP and FTP services when a series of specially crafted requests is sent to the controller over HTTP.

Recommendations 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.

Fix

Improper Check for Exceptional Conditions

Weakness Enumeration

CWE-754

Related Identifiers

CVE-2020-7549

Affected Products

Modicon M340

Modicon Premium

Modicon Quantum

References · 4

• https://osv.dev/vulnerability/CVE-2020-7549 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-7549 · Security Note
• https://se.com/ww/en/download/document/SEVD-2020-343-06 · Vendor Advisory
• https://t.me/cveNotify/165108 · Telegram Post