Vulnerability · Published Oct 7, 2026 · Assigned by mitre
CVE-2026-107194
Critical 9.2
In plain English
A critical-severity authentication bypass in iSolarCloud from Sungrow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).
Official description
Sungrow iSolarCloud before 2026-08-25 allows authentication bypass and account takeover via "login_type":"5" in a login request, potentially leading to "local blackouts on the whole continent" in Europe. An email address for the user_account property is required; however, a user can view the email address associated with their parent organization.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Sungrow | iSolarCloud | 0 – before 2026-08-25 |
Weakness: CWE-288 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:H/SI:H/SA:H/S:P
References
- https://www.sungrowpower.com/en/products/cloud-software/isolarcloud
- https://jakkaru.de/articles/sungrow-vulnerability-exposes-gigawatts-worldwide
- https://www.sungrowpower.com/en/login-bypass-vulnerability-in-sungrow-isolarcloud
- https://www.linkedin.com/posts/patrick-lamplmair-0aa66715b_otsecurity-gridsecurity-solarenergy-activity-7514199420771393536-HAi3
- https://www.pv-magazine.com/2026/10/08/sungrow-patches-isolarcloud-vulnerability-after-security-researchers-gain-access/
- https://www.pv-tech.org/sungrow-patches-cloud-vulnerability-affecting-solar-inverters/