CVE-2021-22786

A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive information stored on the memory of the controller when communicating over the Modbus TCP protocol. Affected Products: Modicon M340 CPU (part numbers BMXP34*) (Versions prior to V3.30), Modicon M580 CPU (part numbers BMEP* and BMEH*) (Versions prior to SV3.20), Modicon MC80 (BMKC80) (Versions prior to V1.6), Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S) (All Versions), Modicon Momentum MDI (171CBU*) (Versions prior to V2.3), Legacy Modicon Quantum (All Versions)

• schneider-electric modicon m340 bmxp341000 firmware (< 3.40) • schneider-electric modicon m340 bmxp342000 firmware (< 3.40) • schneider-electric modicon m340 bmxp342010 firmware (< 3.40) • schneider-electric modicon m340 bmxp3420102 firmware (< 3.40) • schneider-electric modicon m340 bmxp342020 firmware (< 3.40) • schneider-electric modicon m340 bmxp342020h firmware (< 3.40) • schneider-electric modicon m340 bmxp342030 firmware (< 3.40) • schneider-electric modicon m340 bmxp3420302 firmware (< 3.40) • schneider-electric modicon m340 bmxp3420302h firmware (< 3.40) • schneider-electric modicon m340 bmxp342030h firmware (< 3.40) • schneider-electric modicon m580 bmeh582040 firmware (<= 3.20) • schneider-electric modicon m580 bmeh582040c firmware (<= 3.20) • schneider-electric modicon m580 bmeh582040s firmware (<= 3.20) • schneider-electric modicon m580 bmeh584040 firmware (<= 3.20) • schneider-electric modicon m580 bmeh584040c firmware (<= 3.20) • schneider-electric modicon m580 bmeh584040s firmware (<= 3.20) • schneider-electric modicon m580 bmeh586040 firmware (<= 3.20) • schneider-electric modicon m580 bmeh586040c firmware (<= 3.20) • schneider-electric modicon m580 bmeh586040s firmware (<= 3.20) • schneider-electric modicon m580 bmep581020 firmware (<= 3.20) • schneider-electric modicon m580 bmep581020h firmware (<= 3.20) • schneider-electric modicon m580 bmep582020 firmware (<= 3.20) • schneider-electric modicon m580 bmep582020h firmware (<= 3.20) • schneider-electric modicon m580 bmep582040 firmware (<= 3.20) • schneider-electric modicon m580 bmep582040h firmware (<= 3.20) • schneider-electric modicon m580 bmep582040s firmware (<= 3.20) • schneider-electric modicon m580 bmep583020 firmware (<= 3.20) • schneider-electric modicon m580 bmep583040 firmware (<= 3.20) • schneider-electric modicon m580 bmep584020 firmware (<= 3.20) • schneider-electric modicon m580 bmep584040 firmware (<= 3.20) • schneider-electric modicon m580 bmep584040s firmware (<= 3.20) • schneider-electric modicon m580 bmep585040 firmware (<= 3.20) • schneider-electric modicon m580 bmep585040c firmware (<= 3.20) • schneider-electric modicon m580 bmep586040 firmware (<= 3.20) • schneider-electric modicon m580 bmep586040c firmware (<= 3.20) • schneider-electric modicon momentum 171cbu78090 firmware (< 2.4) • schneider-electric modicon momentum 171cbu98090 firmware (< 2.4) • schneider-electric modicon momentum 171cbu98091 firmware (< 2.4) • schneider-electric modicon mc80 bmkc8020301 firmware (< 1.70) • schneider-electric modicon mc80 bmkc8020310 firmware (< 1.70) • schneider-electric modicon mc80 bmkc8030311 firmware (< 1.70)