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Vulnerability record · CVE-2019-6831 · published 17 September 2019

CVE-2019-6831: Schneider-electric bmxnor0200h firmware vulnerability

Schneider Electric · Bmxnor0200h Firmware

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in BMXNOR0200H Ethernet / Serial RTU module (all firmware versions), which could cause disconnection of active connections when an unusually high number of IEC 60870- 5-104 packets are received by the module on port 2404/TCP.

8.6 CVSS 3.1 High EPSS 1.4% · top 28.0% CWE-754 · CWE-754
8.6CVSS 3.1 base score, v2 5.0
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in BMXNOR0200H Ethernet / Serial RTU module (all firmware versions), which could cause disconnection of active connections when an unusually high number of IEC 60870- 5-104 packets are received by the module on port 2404/TCP.

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

Affected products

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

References

LinkTags
https://security.cse.iitk.ac.in/responsible-disclosure Broken Link
https://www.schneider-electric.com/en/download/document/SEVD-2019-225-03/ Vendor Advisory
https://security.cse.iitk.ac.in/responsible-disclosure Broken Link
https://www.schneider-electric.com/en/download/document/SEVD-2019-225-03/ 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-2019-6831), CISA KEV, FIRST EPSS (scores of 2026-10-14). This page is refreshed as NVD updates the record.