Description
A CWE-294: Authentication Bypass by Capture-replay vulnerability exists that could cause execution of unauthorized Modbus functions on the controller when hijacking an authenticated Modbus session. Affected Products: EcoStruxure Control Expert (All Versions), EcoStruxure Process Expert (All Versions), Modicon M340 CPU - part numbers BMXP34* (All Versions), Modicon M580 CPU - part numbers BMEP* and BMEH* (All Versions), Modicon M580 CPU Safety - part numbers BMEP58*S and BMEH58*S (All Versions)
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Schneider Electric | EcoStruxure Control Expert | All Versions | — |
| Schneider Electric | EcoStruxure Process Expert | All Versions | — |
| Schneider Electric | Modicon M340 CPU (part numbers BMXP34*) | All Versions | — |
| Schneider Electric | Modicon M580 CPU (part numbers BMEP* and BMEH*) | All Versions | — |
| Schneider Electric | Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S) | All Versions | — |
Advisories 2
- SEVD-2023-010-06 EcoStruxure™ Control Expert, EcoStruxure™ Process Expert and Modicon M340, M580 and M580 CPU Safety Schneider Electric CPCERT · Sep 8, 2026
- ICSA-23-227-01 Schneider Electric EcoStruxure Control Expert, Process Expert, Modicon M340, M580 and M580 CPU (Update A) CISA ICS & IT advisories · May 5, 2026