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Vulnerability record · CVE-2022-37301 · published 22 November 2022

CVE-2022-37301: Schneider-electric modicon m340 bmx p34-2010 firmware vulnerability

Schneider Electric · Modicon M340 Bmx P34 2010 Firmware

A CWE-191: Integer Underflow (Wrap or Wraparound) vulnerability exists that could cause a denial of service of the controller due to memory access violations when using the Modbus TCP protocol. Affected products: Modicon M340 CPU (part numbers BMXP34*)(V3.40 and prior), Modicon M580 CPU (part numbers BMEP* and BMEH*)(V3.22 and prior), Legacy Modicon Quantum/Premium(All Versions), Modicon Momentum MDI (171CBU*)(All Versions), Modicon MC80 (BMKC80)(V1.7 and prior)

7.5 CVSS 3.1 High EPSS 0.75% · top 46.4% CWE-191 · CWE-191
7.5CVSS 3.1 base score
0.75%EPSS exploitation probability, 30 days
NoNot in CISA KEV
48Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A CWE-191: Integer Underflow (Wrap or Wraparound) vulnerability exists that could cause a denial of service of the controller due to memory access violations when using the Modbus TCP protocol. Affected products: Modicon M340 CPU (part numbers BMXP34*)(V3.40 and prior), Modicon M580 CPU (part numbers BMEP* and BMEH*)(V3.22 and prior), Legacy Modicon Quantum/Premium(All Versions), Modicon Momentum MDI (171CBU*)(All Versions), Modicon MC80 (BMKC80)(V1.7 and prior)

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

Affected products

48 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.se.com/us/en/download/document/SEVD-2022-221-02/ Vendor Advisory
https://www.se.com/us/en/download/document/SEVD-2022-221-02/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-37301), CISA KEV, FIRST EPSS (scores of 2026-10-06). This page is refreshed as NVD updates the record.