CVE-2026-5434
Improper storage of sensitive information
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. 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].
INFO
Published Date :
May 21, 2026, 9:16 a.m.
Last Modified :
July 30, 2026, 7:18 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-5434
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 0dc86260-d7e3-4e81-ba06-3508e030ce8d | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Ensure proper input validation.
- Restrict file write permissions.
- Apply vendor patches if available.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-5434.
| URL | Resource |
|---|---|
| https://www.honeywell.com/us/en/product-security |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-5434 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-5434
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-5434 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-5434 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 30, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-5434', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-05-21T12:06:31.149864Z'} -
CVE Modified by [email protected]
Jul. 27, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Honeywell International Inc.', 'product': 'Control Network Module (CNM)', 'versions': [{'status': 'affected', 'version': '100.1', 'versionType': 'cpe', 'lessThanOrEqual': '110.2'}], 'defaultStatus': 'unaffected'}] Changed Description Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority. 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. 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]. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-538 Added Reference https://www.honeywell.com/us/en/product-security -
CVE Unrejected by [email protected]
Jul. 27, 2026
Action Type Old Value New Value -
CVE Modified by [email protected]
Jun. 02, 2026
Action Type Old Value New Value Changed 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. Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority. Removed CVSS V3.1 Honeywell International Inc.: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Removed CVSS V3.1 NIST: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Removed CWE Honeywell International Inc.: CWE-538 Removed CPE Configuration AND OR *cpe:2.3:o:honeywell:control_network_module_firmware:*:*:*:*:*:*:*:* versions from (including) 100.1 up to (including) 110.2 OR cpe:2.3:h:honeywell:control_network_module:-:*:*:*:*:*:*:* Removed Reference Honeywell International Inc.: https://process.honeywell.com/ Removed Reference Type Honeywell International Inc.: https://process.honeywell.com/ Types: Product -
CVE Rejected by [email protected]
Jun. 02, 2026
Action Type Old Value New Value -
Initial Analysis by [email protected]
May. 22, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CPE Configuration AND OR *cpe:2.3:o:honeywell:control_network_module_firmware:*:*:*:*:*:*:*:* versions from (including) 100.1 up to (including) 110.2 OR cpe:2.3:h:honeywell:control_network_module:-:*:*:*:*:*:*:* Added Reference Type Honeywell International Inc.: https://process.honeywell.com/ Types: Product -
New CVE Received by [email protected]
May. 21, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-538 Added Reference https://process.honeywell.com/