CVE-2021-22786

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)

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.18%
Vendor Advisory schneider-electric.com
Affected: Schneider Electric Modicon M340 CPU (part numbers BMXP34*)
Affected: Schneider Electric Modicon M580 CPU (part numbers BMEP* and BMEH*)
Affected: Schneider Electric Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S)
Affected: Schneider Electric Modicon MC80 (BMKC80)
Affected: Schneider Electric Modicon Momentum CPU (171CBU*)
Affected: Schneider Electric Legacy Modicon Quantum
Published at:
Updated at:

References

Link Tags
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.pdf patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-22786?
CVE-2021-22786 has been scored as a high severity vulnerability.
How to fix CVE-2021-22786?
To fix CVE-2021-22786, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-22786 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-22786 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-22786?
CVE-2021-22786 affects Schneider Electric Modicon M340 CPU (part numbers BMXP34*), Schneider Electric Modicon M580 CPU (part numbers BMEP* and BMEH*), Schneider Electric Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S), Schneider Electric Modicon MC80 (BMKC80), Schneider Electric Modicon Momentum CPU (171CBU*), Schneider Electric Legacy Modicon Quantum.
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