What is CVE-2025-36535?

CVE-2025-36535 is a critical-severity vulnerability in Automationdirect Mb-Gateway, classified under Missing Authentication for Critical Function. CVSS score: 10.0/10. Published 2025-05-21.

How severe is CVE-2025-36535?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Is CVE-2025-36535 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Automationdirect Mb-Gateway

CVE-2025-36535

The embedded web server lacks authentication and access controls, allowing unrestricted remote access. This could lead to configuration changes, operational disruption, or arbitrary code execution depending on the environment and exposed functionality.

Vulnerability class: Broken Authentication

EPSS: 0.010 (59.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Automationdirect Mb-gateway — versions All

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-36535?: CVE-2025-36535 is a critical-severity vulnerability in Automationdirect Mb-Gateway, classified under Missing Authentication for Critical Function. CVSS score: 10.0/10. Published 2025-05-21.
How severe is CVE-2025-36535?: Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2025-36535 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.