CVE-2026-5434 Improper storage of sensitive information
An attacker can access protected data by probing system files due to improper storage of sensitive information in Honeywell Control Network Modules.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5434?
CVE-2026-5434 is a medium-severity vulnerability in Honeywell International Inc. Control Network Module (CNM), published on 21 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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].
Weakness: CWE-538
Which versions are affected by CVE-2026-5434?
How do I fix CVE-2026-5434?
No fix has been published for CVE-2026-5434 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-5434 being exploited?
There is no known exploitation of CVE-2026-5434 in the wild and no public exploit code.
Sources
Also known as GHSA-m6f8-6m3m-x2rv.