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
CWE
Assigner
References
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
SunGrow iSolarCloud Affected: 0 , < 7 June 2025 (custom)
Create a notification for this product.
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

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.