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CVE-2021-22786

HIGH
Published 2023-02-01T00:00:00.000Z
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CVSS Score

V3.1
7.5
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.002
probability
of exploitation in the wild

There is a 0.2% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.396
Higher than 39.6% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
NONE
Availability
NONE

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)

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Schneider Electric

Modicon M340 CPU (part numbers BMXP34*)

Affected Versions:

All
Schneider Electric

Modicon M580 CPU (part numbers BMEP* and BMEH*)

Affected Versions:

All
Schneider Electric

Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S)

Affected Versions:

All Versions
Schneider Electric

Modicon MC80 (BMKC80)

Affected Versions:

All
Schneider Electric

Modicon Momentum CPU (171CBU*)

Affected Versions:

All
Schneider Electric

Legacy Modicon Quantum

Affected Versions:

All Versions

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-c8j6-69w9-74h6

Advisory Details

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 Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-22786
WEB 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

Advisory provided by GitHub Security Advisory Database. Published: February 1, 2023, Modified: February 8, 2023

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.pdf
Published: 2023-02-01T00:00:00.000Z
Last Modified: 2025-02-05T20:06:44.280Z
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