CVE-2025-56558The Dyson MQTT server (2022 and possibly later) allows publications and subscriptions by a client that has the correct values of…
- 3.0LowCVSS base score
- 0.38%Exploitation in 30 daysEPSS · top 68% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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." 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.
Timeline
ID reserved
By mitre
- 2 months later
· 2 months later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| mitreCNA (assigner) | 3.1 | Low3.0 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Low3.0 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.38% · top 68% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.0.
Affected products
- affected 2022
References
References4
- https://archive.org/details/dyson-acpolicy-bug-report (opens in a new tab)
- https://www.dyson.co.uk/support/reporting-data-security-issues (opens in a new tab)
- https://www.dyson.com/air-treatment/air-purifier-heaters/pure-hot-cool-hp04 (opens in a new tab)
- https://support.dyson.com.au/supporthome/Air-Treatment/Purifier/pure-hot-cool-link/385276-01/troubleshooting/machine-is-not-heating (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-36692 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-56558)Record last updated .