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SEVD-2018-081-01 — Embedded FTP Servers for Modicon PAC Controllers

HIGH
CVSS 8.1
Date 2026-10-16T20:34:20+00:00
Source schneider-electric
Published by Schneider Electric

// Description

# Schneider Electric Security Notification 22-Mar-18 (13-Aug-24) Document Reference Number – SEVD-2018-081-01 v9.0.0 Page 1 of 8 # Embedded FTP Servers for Modicon PAC Controllers 22 March 2018 (13 August 2024) ## Overview Schneider Electric is aware of multiple vulnerabilities in the FTP servers of its Modicon PAC controllers. Modicon PACs (Programmable Automation Controllers) control and monitor industrial operations in a sustainable, flexible, efficient, and protected way. Our PLCs and PACs supply edge technology, augmenting it with Ethernet connectivity, built-in cybersecurity, and processing power needed to handle Big Data analysis and protect against new vulnerabilities among connected industrial assets, across devices or into the cloud. Failure to address these vulnerabilities could result in unauthorized access to your PLC and a denial of service or other malicious activity. August 2024 Update: A remediation is available for the Modicon M580 CPU Safety (page 4). ## Affected Products and Versions Affected Products and Versions CVE- > 2018-7242 2018-7241 2018-7240 2011-4859 Modicon M340, v3.50 X X XModicon M340, v3.40 and prior X X X XModicon M580 (part numbers BMEP* & BMEH*, excluding M580 CPU Safety), Versions prior to SV4.10 X X XModicon M580 CPU Safety (part numbers BMEP58*S & BMEH58*S), Versions prior to SV4.21 X X XModicon RTU: BMXNOR0200H, versions prior to v1.7 IR24 X X X XModicon Ethernet Communication Modules: BMXNOE01*, All versions X X X XModicon X80 Ethernet Communication Modules: BMXNOC0401, versions prior to v2.11 X X X XLegacy Modicon Premium and Quantum, All versions X X X XSchneider Electric Security Notification 22-Mar-18 (13-Aug-24) Document Reference Number – SEVD-2018-081-01 v9.0.0 Page 2 of 8 ## Vulnerability Details CVE ID: CVE-2018-7240 CVSS v3.0 Base Score 8.1 | High | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

// Vulnerabilities (4)

CVE ID CVSS Score Severity Description
CVE-2018-7242 8.1 high
Vulnerable hash algorithms exists in Schneider Electric's Modicon Premium, Modicon Quantum, Modicon M340, and BMXNOR0200 controllers in all versions of the communication modules. The algorithm used to encrypt the password is vulnerable to hash collision attacks.
CVE-2018-7241 8.1 high
Hard coded accounts exist in Schneider Electric's Modicon Premium, Modicon Quantum, Modicon M340, and BMXNOR0200 controllers in all versions of the communication modules.
CVE-2018-7240 8.1 high
A vulnerability exists in Schneider Electric's Modicon Quantum in all versions of the communication modules which could allow arbitrary code execution. An FTP command used to upgrade the firmware of the module can be misused to cause a denial of service, or in extreme cases, to load a malicious firmware.
CVE-2011-4859 8.1 high
The Schneider Electric Quantum Ethernet Module, as used in the Quantum 140NOE771* and 140CPU65* modules, the Premium TSXETY* and TSXP57* modules, the M340 BMXNOE01* and BMXP3420* modules, and the STB DIO STBNIC2212 and STBNIP2* modules, uses hardcoded passwords for the (1) AUTCSE, (2) AUT_CSE, (3) fdrusers, (4) ftpuser, (5) loader, (6) nic2212, (7) nimrohs2212, (8) nip2212, (9) noe77111_v500, (10) ntpupdate, (11) pcfactory, (12) sysdiag, (13) target, (14) test, (15) USER, and (16) webserver accounts, which makes it easier for remote attackers to obtain access via the (a) TELNET, (b) Windriver Debug, or (c) FTP port.

// Affected Products (2)

Vendor Product Asset Type Purdue Level Firmware
Schneider Electric Modicon M340 plc
L1
--
Schneider Electric Software, LLC Schneider Electric Software, LLC Modicon M340 plc
L1
--

// Remediations (5)

Mitigation: Schneider Electric has posted firmware upgrades on their Web site, (http://www.schneider-electric.co
Schneider Electric has posted firmware upgrades on their Web site, (http://www.schneider-electric.com/download/ww/en/results/3541958-SoftwareFirmware/). Users should ensure they are using the minimum versions referenced below: Quantum - 140NOE77101 Exec V5.01 or greater for Unity Users, 140NOE77111 Exec V5.11 or greater, 140NOE77101 Exec. V4.9 or greater for Concept Users, 140NOE77111 Exec. V5.5 or greater for Concept Users, 140CPU65150 Exec V3.8 or greater, 140CPU65160 Exec V3.8 or greater, 140CPU65260 Exec V3.8 or greater, and 140NOC77101 Exec V1.03 or greater.
Mitigation: Schneider has also released a firmware upgrade to address the FTP service vulnerability referenced a
Schneider has also released a firmware upgrade to address the FTP service vulnerability referenced above. It is available on selected Quantum programmable logic controller modules. This upgrade includes a new feature that allows the user to enable or disable both the FTP and HTTP services on the modules. Disabling these services will mitigate the vulnerability mentioned above. The following products support the HTTP and FTP service enable and disable feature: 140NOE77101 Firmware Version 06.00 or greater, and 140NOE77111 Firmware Version: 06.00 or greater.
Mitigation: M340 - BMXNOE0100 Exec V2.50 or greater, BMXNOE0110 Exec v5.3 or greater, and BMXNOC0401 Exec V2.01
M340 - BMXNOE0100 Exec V2.50 or greater, BMXNOE0110 Exec v5.3 or greater, and BMXNOC0401 Exec V2.01 or greater.
Mitigation: Premium - TSXETY4103 Exec V5.2 or greater, TSXETY5103 Exec V5.5 or greater, TSXP571634 Exec V5.2 or
Premium - TSXETY4103 Exec V5.2 or greater, TSXETY5103 Exec V5.5 or greater, TSXP571634 Exec V5.2 or greater, TSXP572634 Exec V5.2 or greater, TSXP573634 Exec V5.2 or greater, TSXP574634 Exec V3.8 or greater, TSXP575634 Exec V3.8 or greater, TSXP576634 Exec V3.8 or greater, and TSXETC101 Exec V2.01 or greater.
Mitigation: Schneider Electric has created firmware upgrades that resolve the Telnet and Windriver debug port vu
Schneider Electric has created firmware upgrades that resolve the Telnet and Windriver debug port vulnerabilities for all affected products by removing the Telnet and Windriver services from these modules. According to Schneider Electric, removing these services will not affect the capacities/functionalities of the product or impact the performance of customer installations. Telnet and Windriver debug services were installed only for advanced troubleshooting use and were never intended for customer use.

// References