CVE-2025-56558

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-56558
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-10-29 17:15:35 UTC
Updated2026-10-08 11:10:00 UTC
DescriptionThe 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." Based on the submitted report, in order to leverage this issue, an attacker needs to own a Dyson device with full privileges, sniff for the AWS credentials, and then transfer ownership of that Dyson device to the victim. Even if these steps were successfully accomplished, the attacker only acquires the ability to configure the Dyson device within its safe operating range, and does not acquire the ability to execute code on the device or obtain sensitive information.

Risk And Classification

Primary CVSS: v3.1 3 LOW from [email protected]

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

EPSS: 0.003760000 probability, percentile 0.312830000 (date 2026-10-25)

Problem Types: CWE-420 | CWE-420 CWE-420 Unprotected Alternate Channel

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N
3.1CNADECLARED3LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Dyson MQTT Server affected 2022 custom Not specified

References

ReferenceSourceLinkTags
archive.org/details/dyson-acpolicy-bug-report [email protected] archive.org
support.dyson.com.au/supporthome/Air-Treatment/Purifier/pure-hot-cool-link/385276-... [email protected] support.dyson.com.au
www.dyson.co.uk/support/reporting-data-security-issues [email protected] www.dyson.co.uk
www.dyson.com/air-treatment/air-purifier-heaters/pure-hot-cool-hp04 [email protected] www.dyson.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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