# CVE-2023-3634

## Summary

- **CVE ID:** CVE-2023-3634
- **Severity:** HIGH
- **CVSS Score:** 8.8 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** CWE-1242
- **Published:** Apr 16, 2026
- **Last Modified:** Apr 16, 2026

## Description

In products of the MSE6 product-family by Festo a remote authenticated, low privileged attacker could use functions of undocumented test mode which could lead to a complete loss of confidentiality, integrity and availability.

## Affected Products

- Festo — MSE6-C2M-5000-FB36-D-M-RG-BAR-M12L4-AGD (*)
- Festo — MSE6-C2M-5000-FB36-D-M-RG-BAR-M12L5-AGD (*)
- Festo — MSE6-C2M-5000-FB43-D-M-RG-BAR-M12L4-MQ1-AGD (*)
- Festo — MSE6-C2M-5000-FB43-D-M-RG-BAR-M12L5-MQ1-AGD (*)
- Festo — MSE6-C2M-5000-FB44-D-M-RG-BAR-AMI-AGD (*)
- Festo — MSE6-C2M-5000-FB44-D-RG-BAR-AMI-AGD (*)
- Festo — MSE6-D2M-5000-CBUS-S-RG-BAR-VCB-AGD (*)
- Festo — MSE6-E2M-5000-FB13-AGD (*)
- Festo — MSE6-E2M-5000-FB36-AGD (*)
- Festo — MSE6-E2M-5000-FB37-AGD (*)
- Festo — MSE6-E2M-5000-FB43-AGD (*)
- Festo — MSE6-E2M-5000-FB44-AGD (*)

## References

- [CNA](https://certvde.com/de/advisories/VDE-2023-020/)
- [CNA](https://festo.csaf-tp.certvde.com/.well-known/csaf/white/2023/fsa-202304.json)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.64%
- **EPSS Percentile:** 48.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._