CVE-2024-8933: Schneider Electric Modicon m340

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

CWE-924: Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability exists that could cause retrieval of password hash that could lead to denial of service and loss of confidentiality and integrity of controllers. To be successful, the attacker needs to inject themself inside the logical network while a valid user uploads or downloads a project file into the controller.

Affected products

• Schneider Electric Modicon m340: any version
• Schneider Electric Modicon MC80: any version
• Schneider Electric Modicon Momentum Unity m1e Processor: any version
• Schneider Electric Modicon m340 CPU Part Numbers BMXP34*: any version
• Schneider Electric Modicon MC80 Part Numbers BMKC80: any version
• Schneider Electric Modicon Momentum Unity m1e Processor 171cbu*: any version

Published 2024-11-13. Last modified 2026-06-17.