CVE-2017-7574

9.8 CRITICAL

Schneider Electric SoMachine Basic 1.4 SP1 and Schneider Electric Modicon TM221CE16R 1.3.3.3 devices have a hardcoded-key vulnerability

Published: 2017-04-06 · Last updated: 2026-05-29

Severity and scoring

CVSS: 9.8 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-321, CWE-798

Affected products

Vendor	Product
schneider-electric	modicon_tm221ce16r_firmware, somachine

Description

Schneider Electric SoMachine Basic 1.4 SP1 and Schneider Electric Modicon TM221CE16R 1.3.3.3 devices have a hardcoded-key vulnerability. The Project Protection feature is used to prevent unauthorized users from opening an XML protected project file, by prompting the user for a password. This XML file is AES-CBC encrypted; however, the key used for encryption (SoMachineBasicSoMachineBasicSoMa) cannot be changed. After decrypting the XML file with this key, the user password can be found in the decrypted data. After reading the user password, the project can be opened and modified with the Schneider product.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2017-7574
[Vendor advisory]http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2017-097-01
[Other]http://www.securityfocus.com/bid/97518
[Other]https://os-s.net/advisories/OSS-2017-02.pdf
[Vendor advisory]http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2017-097-01
[Other]http://www.securityfocus.com/bid/97518
[Other]https://os-s.net/advisories/OSS-2017-02.pdf

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