Description
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists that could
cause a potential arbitrary code execution after a successful Man-In-The-Middle attack followed by sending a
crafted Modbus function call to tamper with memory area involved in memory size computation.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Schneider Electric | Modicon M340 CPU (part numbers BMXP34*) | Versions prior to SV3.65 | — |
| Schneider Electric | Modicon MC80 (part numbers BMKC80) | All versions | — |
| Schneider Electric | Modicon Momentum Unity M1E Processor (171CBU*) | All Versions | — |
Advisories 2
- ICSA-24-326-04 Schneider Electric Modicon M340, MC80, and Momentum Unity M1E (Update B) CISA ICS & IT advisories · Jan 20, 2026
- SEVD-2024-317-03 Modicon Controllers M340 / Momentum / MC80 Schneider Electric CPCERT · Jan 13, 2026