Sunny Boy 3600 Firmware
CVE-2017-9855
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionCVE.org
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
AnalysisAI
An issue was discovered in SMA Solar Technology products. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified as Incorrect Authorization (CWE-863), which allows attackers to bypass authorization checks to access restricted resources. 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 Affected products include: Sma Sunny Boy 3600 Firmware, Sma Sunny Boy 5000 Firmware, Sma Sunny Tripower Core1 Firmware, Sma Sunny Tripower 15000Tl Firmware, Sma Sunny Tripower 20000Tl Firmware.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Review and test authorization logic, implement consistent access control checks, use centralized authorization framework.
More in Sunny Boy 3600 Firmware
View allAn issue was discovered in SMA Solar Technology products. Rated critical severity (CVSS 9.8), this vulnerability is remo
An issue was discovered in SMA Solar Technology products. Rated critical severity (CVSS 9.8), this vulnerability is remo
An Incorrect Password Management issue was discovered in SMA Solar Technology products. Rated critical severity (CVSS 9.
An issue was discovered in SMA Solar Technology products. Rated critical severity (CVSS 9.8), this vulnerability is remo
An issue was discovered in SMA Solar Technology products. Rated critical severity (CVSS 9.8), this vulnerability is remo
An issue was discovered in SMA Solar Technology products. Rated critical severity (CVSS 9.8), this vulnerability is remo
An issue was discovered in SMA Solar Technology products. Rated high severity (CVSS 8.8), this vulnerability is remotely
An issue was discovered in SMA Solar Technology products. Rated high severity (CVSS 8.1), this vulnerability is remotely
An issue was discovered in SMA Solar Technology products. Rated high severity (CVSS 7.5), this vulnerability is remotely
An issue was discovered in SMA Solar Technology products. Rated high severity (CVSS 7.5), this vulnerability is remotely
An issue was discovered in SMA Solar Technology products. Rated low severity (CVSS 3.4), this vulnerability is remotely
Same weakness CWE-863 – Incorrect Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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