CVE-2021-22789

MEDIUM

Modicon PLC <all - Memory Corruption

Title source: llm
STIX 2.1

Description

A CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer 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).

References (1)

Core 1
Core References

Scores

CVSS v3 6.5
EPSS 0.0044
EPSS Percentile 63.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-119
Status published
Products (49)
schneider-electric/modicon_m340_bmxp341000
schneider-electric/modicon_m340_bmxp342010
schneider-electric/modicon_m340_bmxp342020
schneider-electric/modicon_m340_bmxp342030
schneider-electric/modicon_m580_bmeh582040
schneider-electric/modicon_m580_bmeh582040c
schneider-electric/modicon_m580_bmeh582040s
schneider-electric/modicon_m580_bmeh584040
schneider-electric/modicon_m580_bmeh584040c
schneider-electric/modicon_m580_bmeh584040s
... and 39 more
Published Sep 02, 2021
Tracked Since Feb 18, 2026