CVE-2017-9855
high-risk
Published 2017-08-05
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
Do I need to act?
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0.42% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (20)
Sunny Boy 5000 Firmware
Sunny Tripower 20000Tl Firmware
Sunny Boy 4000Tl Firmware
Sunny Boy 5000Tl Firmware
Sunny Boy 2.5 Firmware
Sunny Boy 4.0 Firmware
Sunny Boy 5.0 Firmware
Sunny Central 630Cp Xt Firmware
Sunny Central Storage 630 Firmware
Sunny Central Storage 760 Firmware
Sunny Central Storage 850 Firmware
Sunny Central Storage 2200 Firmware
Sunny Central Storage 2500-Ev Firmware
Sunny Boy 3600 Firmware
Sunny Tripower Core1 Firmware
Sunny Tripower 15000Tl Firmware
Sunny Tripower 25000Tl Firmware
Sunny Tripower 5000Tl Firmware
Sunny Tripower 12000Tl Firmware
Sunny Tripower 60 Firmware
Affected Vendors
References (6)
Third Party Advisory
https://horusscenario.com/CVE-information/
Third Party Advisory
https://horusscenario.com/CVE-information/
58
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
2/34 · Minimal
Exposure
24/34 · High