CVE-2020-7562

Name: CVE-2020-7562
Creator: NVD / NIST
Published: 2020-11-18T14:15:12.377+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.88%

Last modified Jun 17, 2026

CVE-2020-7562 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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.. EPSS estimates a 0.88% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS Probability

0.88%

54.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Schneider-Electric	Modicon Tsxety4103 Firmware	All versions
Schneider-Electric	Modicon Tsxety5103 Firmware	All versions
Schneider-Electric	Modicon Tsxp574634 Firmware	All versions
Schneider-Electric	Modicon Tsxp575634 Firmware	All versions
Schneider-Electric	Modicon Tsxp576634 Firmware	All versions
Schneider-Electric	Modicon Quantum 140noe77101 Firmware	All versions
Schneider-Electric	Modicon Quantum 140noe77111 Firmware	All versions
Schneider-Electric	Modicon Quantum 140noc78100 Firmware	All versions
Schneider-Electric	Modicon Quantum 140cpu65150 Firmware	All versions
Schneider-Electric	Modicon Quantum 140cpu65150c Firmware	All versions
Schneider-Electric	Modicon Quantum 140cpu65160c Firmware	All versions
Schneider-Electric	Modicon Quantum 140cpu65160 Firmware	All versions
Schneider-Electric	Modicon M340 Bmx P34-2010 Firmware	All versions
Schneider-Electric	Modicon M340 Bmx P34-2030 Firmware	All versions
Schneider-Electric	Modicon M340 Bmx Noc 0401 Firmware	All versions
Schneider-Electric	Modicon M340 Bmx Noe 0100 Firmware	All versions
Schneider-Electric	Modicon M340 Bmx Noe 0100h Firmware	All versions
Schneider-Electric	Modicon M340 Bmx Noe 0110 Firmware	All versions
Schneider-Electric	Modicon M340 Bmx Noe 0110h Firmware	All versions
Schneider-Electric	Modicon M340 Bmx Nor 0200h Firmware	All versions

References

https://www.se.com/ww/en/download/document/SEVD-2020-315-01/Vendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2020-315-01/Vendor Advisory

Timeline

Published: Nov 18, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7562?

How severe is CVE-2020-7562?

CVE-2020-7562 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.88% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7562?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-7562?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST