CVE-2021-22790: Medium severity Schneider-electric Modicon M340 Bmxp341000 vulnerability
A CWE-125: Out-of-bounds Read vulnerability that could cause a Denial of Service on the Modicon PLC controller / simulator when updating the controller application with a specially crafted project file exists in Modicon M580 CPU (part numbers BMEP and BMEH, all versions), Modicon M340 CPU (part numbers BMXP34, all versions), Modicon MC80 (part numbers BMKC80, all versions), Modicon Momentum Ethernet CPU (part numbers 171CBU, all versions), PLC Simulator for EcoStruxureª Control Expert, including all Unity Pro versions (former name of EcoStruxureª Control Expert, all versions), PLC Simulator for EcoStruxureª Process Expert including all HDCS versions (former name of EcoStruxureª Process Expert, all versions), Modicon Quantum CPU (part numbers 140CPU, all versions), Modicon Premium CPU (part numbers TSXP5, all versions).
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID is CVE-2021-22790.
What is the severity level of CVE-2021-22790?
The severity level of CVE-2021-22790 is medium, with a score of 6.5.
What is the affected software of CVE-2021-22790?
The affected software of CVE-2021-22790 includes Schneider-electric Modicon M340 Bmxp341000, Modicon M340 Bmxp342010, Modicon M340 Bmxp342020, Modicon M340 Bmxp342030, Modicon M580 Bmeh582040, and more.
How does CVE-2021-22790 impact the Modicon PLC controller / simulator?
CVE-2021-22790 is an out-of-bounds read vulnerability that could cause a Denial of Service on the Modicon PLC controller / simulator when updating the controller application with a specially crafted project file.
How can I fix CVE-2021-22790?
To fix CVE-2021-22790, it is recommended to apply the necessary patches and updates provided by Schneider Electric and follow their recommended security guidelines.