CVE-2023-3634

HIGHNVD 8.88.8—

8.8

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.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 25.0%
KEV: Not listed

Published

April 16, 2026

Last Modified

April 17, 2026

Advisory Details (2)

Auto-updated May 20, 2026

No patch confirmed yet.

generic

https://festo.csaf-tp.certvde.com/.well-known/csaf/white/2023/fsa-202304.json

generic

Festo: MSE6-C2M/D2M/E2M Incomplete User Documentation of Remote Accessible Functions

https://certvde.com/de/advisories/VDE-2023-020/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-1242

Data Freshness Timeline

(refreshed 15× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

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Frequently asked(5)

What is CVE-2023-3634?

CVE-2023-3634 is a high vulnerability published on April 16, 2026. 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.

When was CVE-2023-3634 disclosed?

CVE-2023-3634 was first published in the National Vulnerability Database on April 16, 2026, with the most recent update on April 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-3634 actively exploited?

CVE-2023-3634 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 25.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-3634?

CVE-2023-3634 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2023-3634?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-3634, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2023-3634

📅 Published

🔄 Last Modified

📋 Advisory Details (2)

Festo: MSE6-C2M/D2M/E2M Incomplete User Documentation of Remote Accessible Functions

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-3634?

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Advisory Details (2)

Frequently asked(5)

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