Kirill Chernyshov

**Name of the Vulnerable Software and Affected Versions** Schneider Electric's Modicon Premium, Modicon Quantum, Modicon M340, and BMXNOR0200 controllers (affected versions not specified) **Description** The issue is related to hard-coded accounts in the communication modules of the affected controllers. This concern is also associated with the FTP server vulnerability in the programmable logic controllers' firmware, which involves the use of pre-set credentials. Exploitation of this issue could allow a remote attacker to gain access to the device. **Recommendations** For all affected versions, consider disabling or restricting access to the FTP server and communication modules until a fix is available. As a temporary workaround, restrict access to the devices to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Name of the Vulnerable Software and Affected Versions: Schneider Electric's Modicon Premium, Modicon Quantum, Modicon M340, and BMXNOR0200 controllers (affected versions not specified) Description: The issue concerns a vulnerable hash algorithm used for password encryption in the communication modules of the mentioned controllers. This vulnerability makes the algorithm susceptible to hash collision attacks. Additionally, errors in the implementation of the cryptographic algorithm in the FTP server of the programmable logic controllers' firmware may allow a remote attacker to guess passwords. Recommendations: For all affected versions, consider disabling or restricting access to the vulnerable communication modules until a secure alternative or patch is available. As a temporary workaround, restrict access to the FTP server to minimize the risk of exploitation. Avoid using weak passwords and consider implementing additional security measures to protect against remote attacks. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Name of the Vulnerable Software and Affected Versions: Schneider Electric Modicon Quantum versions (affected versions not specified) Description: The issue is related to inadequate access control in the programmable logic controller's software, which could allow a remote attacker to execute arbitrary code, cause a denial of service, or load malicious firmware using a specific FTP command designed for firmware updates. Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.