CVE-2017-9855
9.8 · CRITICALOverview
CVE-2017-9855 is a critical-severity vulnerability affecting sma sunny_boy_3600_firmware. It was published on August 5, 2017 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
An issue was discovered in SMA Solar Technology products. A secondary authentication system is available for Installers called the Grid Guard system. This system uses predictable codes, and a single Grid Guard code can be used on any SMA inverter. Any such code, when combined with the installer account, allows changing very sensitive parameters. NOTE: the vendor reports that Grid Guard is not an authentication feature; it is only a tracing feature. Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected
Remediation
Check the references section for vendor advisories and patches from sma. Update sunny_boy_3600_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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References
Frequently Asked Questions
What is CVE-2017-9855?
CVE-2017-9855 is a critical-severity vulnerability affecting sma sunny_boy_3600_firmware. It was published on August 5, 2017 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2017-9855?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2017-9855?
Check the references section for vendor advisories and patches from sma. Update sunny_boy_3600_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2017-9855?
CyberStrike's AI-powered security agents can automatically detect CVE-2017-9855 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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