CVE-2025-29756 (GCVE-0-2025-29756)

Vulnerability from cvelistv5 – Published: 2025-06-11 08:01 – Updated: 2025-06-23 12:45 Exclusively Hosted Service
VLAI
Title
MQTT implementation in Sungrow iSolarCloud allowed users to subscribe to all data of all connected inverters
Summary
SunGrow's back end users system iSolarCloud https://isolarcloud.com  uses an MQTT service to transport data from the user's connected devices to the user's web browser.  The MQTT server however did not have sufficient restrictions in place to limit the topics that a user could subscribe to.  While the data that is transmitted through the MQTT server is encrypted and the credentials for the MQTT server are obtained though an API call, the credentials could be used to subscribe to any topic and the encryption key can be used to decrypt all messages received. An attack with an account on iSolarCloud.com could extract MQTT credentials and the decryption key from the browser and then use an external program to subscribe to the topic '#' and thus recieve all messages from all connected devices.
Severity
8.3 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/AU:Y
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-11 13:14 UTC
CWE
Assigner
DIVD CNA under the ENISA root
CNA scorecard B 76/100 over 18 records in the last 180 days details
References
URL Tags
https://csirt.divd.nl/CVE-2025-29756 third-party-advisorytechnical-description
https://csirt.divd.nl/DIVD-2025-00009 third-party-advisory
https://isolarcloud.com product
Impacted products
Vendor Product Version CPE status
SunGrow iSolarCloud Affected: 0 , < 7 June 2025 (custom)
guessed Create a notification for this product.
Date Public
2025-06-08 22:00
Credits
Harm van den Brink (DIVD) Frank Breedijk (DIVD) ENCS (https://encs.eu/)
Show details on NVD website
To clipboard 

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Sightings and recorded dates, grouped by day · UTC

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.