{"id":"CVE-2025-29756","state":"PUBLISHED","title":"MQTT implementation in Sungrow iSolarCloud allowed users to subscribe to all data of all connected inverters","description":"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. \nThe MQTT server however did not have sufficient restrictions in place to limit the topics that a user could subscribe to. \nWhile 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.\nAn 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.","publishedAt":"2025-06-11T08:01:16.794Z","updatedAt":"2025-06-23T12:45:06.342Z","severity":{"score":8.3,"label":"High","version":"4.0","vector":"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","source":"DIVD"},"assigner":"DIVD","products":["SunGrow iSolarCloud"],"affected":[{"vendor":"SunGrow","product":"iSolarCloud","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"7 June 2025","versionType":"custom"}]}],"references":["https://csirt.divd.nl/CVE-2025-29756","https://csirt.divd.nl/DIVD-2025-00009","https://isolarcloud.com"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:08:55.257Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/29xxx/CVE-2025-29756.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-29756","state":"PUBLISHED","datePublished":"2025-06-11T08:01:16.794Z","dateUpdated":"2025-06-23T12:45:06.342Z","assignerShortName":"DIVD","assignerOrgId":"b87402ff-ae37-4194-9dae-31abdbd6f217","dateReserved":"2025-03-11T13:40:29.272Z"},"containers":{"cna":{"title":"MQTT implementation in Sungrow iSolarCloud allowed users to subscribe to all data of all connected inverters","descriptions":[{"lang":"en","value":"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. \nThe MQTT server however did not have sufficient restrictions in place to limit the topics that a user could subscribe to. \nWhile 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.\nAn 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."}],"affected":[{"vendor":"SunGrow","product":"iSolarCloud","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"7 June 2025","versionType":"custom"}]}],"references":[{"url":"https://csirt.divd.nl/CVE-2025-29756","tags":["third-party-advisory","technical-description"]},{"url":"https://csirt.divd.nl/DIVD-2025-00009","tags":["third-party-advisory"]},{"url":"https://isolarcloud.com","tags":["product"]}],"metrics":[{"cvssV4_0":{"Automatable":"YES","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","description":"CWE-862 Missing Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"DIVD","orgId":"b87402ff-ae37-4194-9dae-31abdbd6f217","dateUpdated":"2025-06-23T12:45:06.342Z"},"credits":[{"lang":"en","type":"finder","value":"Harm van den Brink (DIVD)"},{"lang":"en","type":"analyst","value":"Frank Breedijk (DIVD)"},{"lang":"en","type":"finder","value":"ENCS (https://encs.eu/)"}],"datePublic":"2025-06-08T22:00:00.000Z","impacts":[{"capecId":"CAPEC-1","descriptions":[{"lang":"en","value":"CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"iSolarCloud has been patched by SunGrow and the vulnerability is no longer exploitable."}],"value":"iSolarCloud has been patched by SunGrow and the vulnerability is no longer exploitable."}],"source":{"advisory":"DIVD-2025-00009","discovery":"EXTERNAL"},"tags":["exclusively-hosted-service"],"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-06-11T13:14:49.544632Z","id":"CVE-2025-29756","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-06-11T13:14:59.294Z"}}]}}}