CVE-2020-7535

moderate-risk

Published 2020-12-11

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.

Do I need to act?

0.43% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (20)

Modicon M340 Bmxp341000 Firmware

Modicon M340 Bmxp342000 Firmware

Modicon M340 Bmxp3420102 Firmware

Modicon M340 Bmxp3420102Cl Firmware

Modicon M340 Bmxp342020 Firmware

Modicon M340 Bmxp3420302 Firmware

Modicon M340 Bmxp3420302Cl Firmware

Bmxnoe0100 Firmware

Bmxnoe0110 Firmware

140Noe77101 Firmware

140Noe77111 Firmware

140Cpu65150 Firmware

140Cpu65160 Firmware

140Noc78000 Firmware

140Noc78100 Firmware

140Noc77101 Firmware

Tsxp574634 Firmware

Tsxp575634 Firmware

Tsxp576634 Firmware

Tsxety4103 Firmware

Affected Vendors

Schneider-Electric

References (2)

Vendor Advisory https://www.se.com/ww/en/download/document/SEVD-2020-343-05/

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moderate-risk

Severity 26/34 · High

Exploitability 2/34 · Minimal

Exposure 20/34 · Moderate