CVE-2020-7535

HIGH
7.5
CVSS Score
Published: December 11, 2020 at 12:51 AM UTC
Updated: June 17, 2026 at 03:24 AM UTC
45 products affected across 1 vendorModicon M340 BMXP342020 FirmwareModicon M340 BMXP3420302 FirmwareModicon M340 BMXP341000 Firmware

Using Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions) by N/A?

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

A CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal' Vulnerability Type) vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause disclosure of information when sending a specially crafted request to the controller over HTTP.

Affected

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

All versions
schneider-electric-140cpu65150 (same device)
All versions
schneider-electric-140cpu65160 (same device)
All versions
schneider-electric-140noc77101 (same device)
All versions
schneider-electric-140noc78000 (same device)
All versions
schneider-electric-140noc78100 (same device)
v < 7.3
Affected range stops below 7.3, so it looks safe — our inference, not a vendor statement
schneider-electric-140noe77101 (same device)
v < 7.3
Affected range stops below 7.3, so it looks safe — our inference, not a vendor statement
schneider-electric-140noe77111 (same device)
v < 3.4
Affected range stops below 3.4, so it looks safe — our inference, not a vendor statement
schneider-electric-bmxnoe0100 (same device)
v < 6.6
Affected range stops below 6.6, so it looks safe — our inference, not a vendor statement
schneider-electric-bmxnoe0110 (same device)
v < 3.30
Affected range stops below 3.30, so it looks safe — our inference, not a vendor statement
schneider-electric-modicon-m340-bmxp341000 (same device)

Remediation

No guide yet

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

References (1)

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-22

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