CVE-2026-5433

CRITICAL
Published May 21, 2026 Modified May 22, 2026 CWE-77

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).

CVSS v3.1 Score

9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0032
Probability of exploitation
0.55%
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-77 CWE-77

Affected Products

Vendor Product
honeywell control_network_module_firmware
honeywell control_network_module

References

Advisories & Patches

Frequently Asked Questions

What is CVE-2026-5433? +
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). It has a CVSS v3.1 base score of 9.1 (CRITICAL).
How severe is CVE-2026-5433? +
CVE-2026-5433 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0032, placing it in the 1th percentile for exploitation probability.
What products are affected by CVE-2026-5433? +
CVE-2026-5433 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-2026-5433? +
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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