Critical severity9.8NVD Advisory· Published Aug 5, 2017· Updated Jun 17, 2026
CVE-2017-9855
CVE-2017-9855
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
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
41cpe:2.3:o:sma:sunny_boy_1.5_firmware:-:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:sma:sunny_boy_1.5_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_boy_3000tl_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_boy_3.0_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_boy_2.5_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_3600_firmware:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:sma:sunny_boy_3600_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_boy_4000tl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_3600tl_firmware:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:sma:sunny_boy_3600tl_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_boy_3.6_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_boy_4.0_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_boy_5000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_5000tl_firmware:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:sma:sunny_boy_5000tl_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_boy_5.0_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_boy_storage_2.5_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_1000cp_xt_firmware:-:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:o:sma:sunny_central_1000cp_xt_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_760cp_xt_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_800cp_xt_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_storage_720_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_storage_850_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_2200_firmware:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:sma:sunny_central_2200_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_storage_2200_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_500cp_xt_firmware:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:sma:sunny_central_500cp_xt_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_630cp_xt_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_720cp_xt_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_850cp_xt_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_900cp_xt_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_storage_1000_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_storage_2500-ev_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_storage_500_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_storage_630_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_storage_760_firmware:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:sma:sunny_central_storage_760_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_storage_800_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_central_storage_900_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_tripower_12000tl_firmware:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:sma:sunny_tripower_12000tl_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_tripower_5000tl_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_tripower_15000tl_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_tripower_20000tl_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_tripower_25000tl_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_tripower_60_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:sma:sunny_tripower_core1_firmware:-:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
3News mentions
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