CVE-2020-7562

HIGH
8.1
CVSS Score
Published: November 18, 2020 at 01:54 PM UTC
Updated: June 17, 2026 at 03:25 AM UTC
43 products affected across 1 vendorModicon M340 BMXP342030 FirmwareModicon M340 BMXP342010 FirmwareModicon M340 Bmx Noe 0110 Firmware

Using Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details) by N/A?

Get instant alerts when new vulnerabilities affect Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details) - before attackers find them.

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Severity
HIGH8.1
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

A CWE-125: Out-of-Bounds Read vulnerability exists in the Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details) which could cause a segmentation fault or a buffer overflow when uploading a specially crafted file on the controller over FTP.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
schneider-electric-modicon-m340-bmx-noc-0401 (same device)
All versions
schneider-electric-modicon-m340-bmx-noe-0100 (same device)
All versions
schneider-electric-modicon-m340-bmx-noe-0100h (same device)
All versions
schneider-electric-modicon-m340-bmx-noe-0110 (same device)
All versions
schneider-electric-modicon-m340-bmx-noe-0110h (same device)
All versions
schneider-electric-modicon-m340-bmx-nor-0200h (same device)
All versions
schneider-electric-modicon-m340-bmx-p34-2010 (same device)
All versions
schneider-electric-modicon-m340-bmx-p34-2030 (same device)
All versions
schneider-electric-modicon-quantum-140cpu65150 (same device)
All versions
schneider-electric-modicon-quantum-140cpu65150c (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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