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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.63%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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)
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.63% probability · 48th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- schneider-electric/modicon m340 bmxp341000 firmware · schneider-electric/modicon m340 bmxp342000 firmware · schneider-electric/modicon m340 bmxp342010 firmware · schneider-electric/modicon m340 bmxp3420102 firmware · schneider-electric/modicon m340 bmxp342020 firmware · schneider-electric/modicon m340 bmxp342020h firmware · schneider-electric/modicon m340 bmxp342030 firmware · schneider-electric/modicon m340 bmxp3420302 firmware · schneider-electric/modicon m340 bmxp3420302h firmware · schneider-electric/modicon m340 bmxp342030h firmware · schneider-electric/modicon m580 bmeh582040 firmware · schneider-electric/modicon m580 bmeh582040c firmware · schneider-electric/modicon m580 bmeh582040s firmware · schneider-electric/modicon m580 bmeh584040 firmware · schneider-electric/modicon m580 bmeh584040c firmware · schneider-electric/modicon m580 bmeh584040s firmware · schneider-electric/modicon m580 bmeh586040 firmware · schneider-electric/modicon m580 bmeh586040c firmware · schneider-electric/modicon m580 bmeh586040s firmware · schneider-electric/modicon m580 bmep581020 firmware · +21 more
- Source
- cybersecurity@se.com
References
- https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2022-221-04&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2022-221-04-Modicon_Controllers_Ethernet_Modules_Security_Notification.pdfPatch, Vendor Advisory
- https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2022-221-04&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2022-221-04-Modicon_Controllers_Ethernet_Modules_Security_Notification.pdfPatch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.