CVE-2019-6831

Name: CVE-2019-6831
Creator: NVD / NIST
Published: 2019-09-17T20:15:12.343+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 1.36%

Last modified Jun 17, 2026

CVE-2019-6831 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. 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.. EPSS estimates a 1.36% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.6/10

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

EPSS Probability

1.36%

68.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Schneider-Electric	Bmxnor0200h Firmware	All versions

References

https://security.cse.iitk.ac.in/responsible-disclosureBroken Link
https://www.schneider-electric.com/en/download/document/SEVD-2019-225-03/Vendor Advisory
https://security.cse.iitk.ac.in/responsible-disclosureBroken Link
https://www.schneider-electric.com/en/download/document/SEVD-2019-225-03/Vendor Advisory

Timeline

Published: Sep 17, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-6831?

How severe is CVE-2019-6831?

CVE-2019-6831 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 1.36% probability of exploitation in the next 30 days.

How do I fix CVE-2019-6831?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-6831?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST