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CVE-2020-7564

Published: Nov 18, 2020Updated: May 29, 2026 Sources: CVE List NVD BDU csafCWE-120
NVD MITRE
8.8CVSSHIGH
EPSS Score
1.1%
Top 39.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') 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 write access and the execution of commands when uploading a specially crafted file on the controller over FTP.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-120

Affected Products

Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details)n/a
modicon tsxety4103 firmwareschneider-electricICS / OT / IoT
modicon tsxety5103 firmwareschneider-electricICS / OT / IoT
modicon tsxp574634 firmwareschneider-electricICS / OT / IoT
modicon tsxp575634 firmwareschneider-electricICS / OT / IoT
schneider-electriccommercialFRICS / OT / IoTaka schneider electric se
and 29 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://www.se.com/ww/en/download/document/SEVD-2020-315-01/
se.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-005-01.json
raw.githubusercontent.com
https://www.cisa.gov/news-events/ics-advisories/icsa-21-005-01
cisa.gov
and 10 more references View all →

Timeline

Published
Nov 18, 2020
Last Updated
May 29, 2026

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