CVE-2026-5434: control network Information Disclosure

Description

Honeywell Control Network Module (CNM) contains insertion of sensitive information into an unintended directory. An attacker could exploit this vulnerability through probing system files, potentially resulting in unintended access to protected data.

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CVSS v3.1 Score

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0004

Probability of exploitation

0.13%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-538 CWE-538

Affected Products

Vendor	Product	Versions
honeywell	control_network_module_firmware	100.1 — 110.2
honeywell	control_network_module	All

References

Other References

https://process.honeywell.com/

Frequently Asked Questions

What is CVE-2026-5434? +

Honeywell Control Network Module (CNM) contains insertion of sensitive information into an unintended directory. An attacker could exploit this vulnerability through probing system files, potentially resulting in unintended access to protected data. It has a CVSS v3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2026-5434? +

CVE-2026-5434 has a CVSS v3.1 score of 5.9 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0004, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-5434? +

CVE-2026-5434 affects products from honeywell, specifically: control_network_module, control_network_module_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-5434? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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