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CVE-2026-5433

Honeywell Control Network Module Firmware remote code execution

9.1 CRITICALEPSS 1.55%
  1. Published21 May 2026

Description

Honeywell Control Network Module (CNM) contains command injection vulnerability in the web interface. An attacker could exploit this vulnerability via command delimiters, potentially resulting in Remote Code Execution (RCE).  Honeywell recommends updating to the most recent version of this product, service or offering [200.1]. The CNM versions affected are from [100.1, 101.1, 110.1, and 110.2].

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredHigh
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

Honeywell Control Network Module Firmware≥ 100.1 ≤ 110.2

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2026-5433 being actively exploited?

CVE-2026-5433 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.55%.

How severe is CVE-2026-5433?

CVE-2026-5433 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 1.55% probability of exploitation.

Which products are affected by CVE-2026-5433?

Affected products include Honeywell Control Network Module Firmware.

How do I fix CVE-2026-5433?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-5433 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.