【Security Advisory】Information disclosure vulnerability in Sungrow iSolarCloud(SGSA-202606-0006)
Publish Date: 20261015
Advisory ID: SGSA-202606-0006
Product: iSolarCloud
CVE ID: /
Severity: Low
Date: 2026-10-15
PV Inverter
Energy Storage System
EV Charger
Floating PV System
Wind Products
Hydrogen Equipment
Smart Energy Products
Description
An information disclosure vulnerability exists in Sungrow iSolarCloud. Encrypted credentials belonging to the currently logged‑in user are returned in the response payload of a specific post‑login API. Although these credentials are double‑encrypted, per security best practices for data minimization, APIs should not return such encrypted credential ciphertext in non‑essential scenarios.
Affected Versions
Vulnerable: The vulnerability was fully remediated on August 22, 2026; the system before this date carried this security exposure.
Not Affected: Following the remediation deployment on August 22, 2026, the system is no longer vulnerable to this flaw.
Vulnerability Rating
CVSS(4.0): 2.1/Low/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
The scoring is based on the CVSS 4.0 standard. The scoring criteria can be referenced at (https://www.first.org/cvss/calculator/4.0)
Mitigation and Remediation
Recommended Action: The iSolarCloud has been upgraded and repaired as of August 22, 2026, No action is required from customers.
Patch Release: N/A.
Temporary Fix: N/A.
Acknowledgments
This vulnerability was discovered and reported by Marlon Starkloff.
Contact information
For security issues regarding Sungrow products and solutions, please report to Sungrow psirt@sungrowpower.com.
Revision History
Version | Date | Description |
V1.0 | 2026-10-15 | Initial release |
Statement
All software updates, patches, and documentation provided by Sungrow Power Supply Co., Ltd. are the proprietary work of Sungrow. These materials may only be used for product maintenance and security improvements. Any unauthorized modification, distribution, decompilation, or reverse engineering is strictly prohibited.
Sungrow makes no express or implied warranties regarding the information provided, including but not limited to warranties of merchantability, fitness for a particular purpose, or non-infringement. Sungrow shall not be liable for any direct, indirect, incidental, or consequential damages arising from the use of this document or associated software.
Sungrow reserves the right to update or modify this document at any time without prior notice. Customers are responsible for implementing security updates in a timely manner to protect their systems.