1. EXECUTIVE SUMMARY
- CVSS v4 9.3
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Schneider Electric
- Equipment: Modicon M241 / M251 / M258 / LMC058
- Vulnerability: Improper Input Validation
2. RISK EVALUATION
Successful exploitation of this vulnerability could lead to a denial-of-service and a loss of confidentiality and integrity in the controller.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
Schneider Electric reports that following Modicon PLCs are affected:
- Modicon Controllers M241: All versions
- Modicon Controllers M251: All versions
- Modicon Controllers M258: All versions
- Modicon Controllers LMC058: All versions
3.2 Vulnerability Overview
3.2.1 IMPROPER INPUT VALIDATION CWE-20
An improper input validation vulnerability exists that could lead to a denial-of-service and a loss of confidentiality and integrity in the controller when an unauthenticated crafted Modbus packet is sent to the device.
CVE-2024-11737 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2024-11737. A base score of 9.3 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
3.3 BACKGROUND
- CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Critical Manu
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