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Medium severity6.5NVD Advisory· Published Sep 2, 2021· Updated May 29, 2026

CVE-2021-22789

CVE-2021-22789

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).

Affected products

51
  • Schneider Electric/Modicon M340 Bmxp341000
    cpe:2.3:h:schneider-electric:modicon_m340_bmxp341000:-:*:*:*:*:*:*:*
  • Schneider Electric/Modicon M340 Bmxp342020 Firmware
    cpe:2.3:h:schneider-electric:modicon_m340_bmxp342010:-:*:*:*:*:*:*:*
  • Schneider Electric/Modicon M340 Bmxp3420302 Firmware2 versions
    cpe:2.3:h:schneider-electric:modicon_m340_bmxp342020:-:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:h:schneider-electric:modicon_m340_bmxp342020:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m340_bmxp342030:-:*:*:*:*:*:*:*
  • Schneider Electric/Modicon M580 Bmep584040s8 versions
    cpe:2.3:h:schneider-electric:modicon_m580_bmeh582040:-:*:*:*:*:*:*:*+ 7 more
    • cpe:2.3:h:schneider-electric:modicon_m580_bmeh582040:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmeh582040c:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmeh582040s:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmeh584040s:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep582040h:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep583020:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep584020:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep584040s:-:*:*:*:*:*:*:*
  • Schneider Electric/Modicon M580 Bmep586040c11 versions
    cpe:2.3:h:schneider-electric:modicon_m580_bmeh584040:-:*:*:*:*:*:*:*+ 10 more
    • cpe:2.3:h:schneider-electric:modicon_m580_bmeh584040:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmeh584040c:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmeh586040:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmeh586040c:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmeh586040s:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep583040:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep584040:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep585040:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep585040c:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep586040:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep586040c:-:*:*:*:*:*:*:*
  • Schneider Electric/Modicon M580 Bmep582040s6 versions
    cpe:2.3:h:schneider-electric:modicon_m580_bmep581020:-:*:*:*:*:*:*:*+ 5 more
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep581020:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep581020h:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep582020:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep582020h:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep582040:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_m580_bmep582040s:-:*:*:*:*:*:*:*
  • Schneider Electric/Modicon Mc80 Bmkc80303112 versions
    cpe:2.3:h:schneider-electric:modicon_mc80_bmkc8020301:-:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:h:schneider-electric:modicon_mc80_bmkc8020301:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_mc80_bmkc8030311:-:*:*:*:*:*:*:*
  • Schneider Electric/Modicon Mc80 Bmkc8020310
    cpe:2.3:h:schneider-electric:modicon_mc80_bmkc8020310:-:*:*:*:*:*:*:*
  • Schneider Electric/Modicon Momentum 171cbu980902 versions
    cpe:2.3:h:schneider-electric:modicon_momentum_171cbu78090:-:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:h:schneider-electric:modicon_momentum_171cbu78090:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_momentum_171cbu98090:-:*:*:*:*:*:*:*
  • Schneider Electric/Modicon Momentum 171cbu98091
    cpe:2.3:h:schneider-electric:modicon_momentum_171cbu98091:-:*:*:*:*:*:*:*
  • Schneider Electric/Modicon Premium Tsxp57 6634m8 versions
    cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_1634m:-:*:*:*:*:*:*:*+ 7 more
    • cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_1634m:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_2634m:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_2834m:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_454m:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_4634m:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_554m:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_5634m:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_6634m:-:*:*:*:*:*:*:*
  • Schneider Electric/Modicon Quantum 140cpu65160c4 versions
    cpe:2.3:h:schneider-electric:modicon_quantum_140cpu65150:-:*:*:*:*:*:*:*+ 3 more
    • cpe:2.3:h:schneider-electric:modicon_quantum_140cpu65150:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_quantum_140cpu65150c:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_quantum_140cpu65160:-:*:*:*:*:*:*:*
    • cpe:2.3:h:schneider-electric:modicon_quantum_140cpu65160c:-:*:*:*:*:*:*:*
  • Schneider Electric/Plc Simulator For Ecostruxure Control Expert
    cpe:2.3:h:schneider-electric:plc_simulator_for_ecostruxure_control_expert:-:*:*:*:*:*:*:*
  • Schneider Electric/Plc Simulator For Ecostruxure Process Expert
    cpe:2.3:h:schneider-electric:plc_simulator_for_ecostruxure_process_expert:-:*:*:*:*:*:*:*
  • Schneider Electric/Modicon Quantum Plcllm-create
    Range: all versions
  • Schneider Electric/Modicon M580 CPUllm-fuzzy
    Range: all versions

Patches

Vulnerability mechanics

References

1

News mentions

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