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CVE-2025-56558 Detail

Disputed          Exclusively Hosted Service 

Description

The Dyson MQTT server (2022 and possibly later) allows publications and subscriptions by a client that has the correct values of AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN, and device serial number, even if a device (such as a Pure Hot+Cool device) has been removed and is not visible in the supported MyDyson app. This could allow an unexpected actor to obtain control and set the room temperature (up to 37 Celsius) if ownership of the device is transferred without wiping the device. NOTE: the Supplier's position is that this is "a potential vulnerability that dates back 4 years ago in 2022 and we are unable to replicate that anymore."


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://archive.org/details/dyson-acpolicy-bug-report MITRE
https://support.dyson.com.au/supporthome/Air-Treatment/Purifier/pure-hot-cool-link/385276-01/troubleshooting/machine-is-not-heating MITRE
https://www.dyson.co.uk/support/reporting-data-security-issues MITRE
https://www.dyson.com/air-treatment/air-purifier-heaters/pure-hot-cool-hp04 MITRE

Weakness Enumeration

CWE-ID CWE Name Source
CWE-284 Improper Access Control CISA-ADP  
CWE-287 Improper Authentication CISA-ADP  
CWE-420 Unprotected Alternate Channel MITRE  

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-56558
NVD Published Date:
10/29/2025
NVD Last Modified:
01/08/2026
Source:
MITRE