ICSA-21-278-04: Honeywell c200 firmware vulnerability

Affected Software

3 affected components
Honeywell C200
Honeywell C200E
Honeywell C300 and ACE controllers

Event History

Mar 25, 2025
Advisory Published
07:51 AM

Frequently Asked Questions

1

What is the severity of ICSA-21-278-04?

The severity of ICSA-21-278-04 is classified as high, indicating a significant security risk.

2

What vulnerabilities are associated with ICSA-21-278-04?

ICSA-21-278-04 involves multiple vulnerabilities in Honeywell C200, C200E, C300, and ACE controllers that could allow for unauthorized access.

3

How do I fix ICSA-21-278-04?

To fix ICSA-21-278-04, apply the relevant security updates provided by Honeywell for affected controllers.

4

What systems are affected by ICSA-21-278-04?

ICSA-21-278-04 affects Honeywell C200, C200E, C300, and ACE controllers.

5

Are there any mitigations for ICSA-21-278-04?

Yes, implementing network segmentation and access controls can mitigate the risks associated with ICSA-21-278-04.

Contact

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Fortitude Valley,
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info@secalerts.co
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