{"cve":"CVE-2017-9857","nvd":{"published":"2017-08-05T17:29:00.613","modified":"2026-06-17T01:29:03.687","status":"Modified","description":"An issue was discovered in SMA Solar Technology products. The SMAdata2+ communication protocol does not properly use authentication with encryption: it is vulnerable to man in the middle, packet injection, and replay attacks. Any setting change, authentication packet, scouting packet, etc. can be replayed, injected, or used for a man in the middle session. All functionalities available in Sunny Explorer can effectively be done from anywhere within the network as long as an attacker gets the packet setup correctly. This includes the authentication process for all (including hidden) access levels and the changing of settings in accordance with the gained access rights. Furthermore, because the SMAdata2+ communication channel is unencrypted, an attacker capable of understanding the protocol can eavesdrop on communications. NOTE: the vendor's position is that authentication with encryption is not required on an isolated subnetwork. Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1},"cwes":["CWE-287"],"references":["http://www.sma.de/en/statement-on-cyber-security.html","http://www.sma.de/fileadmin/content/global/specials/documents/cyber-security/Whitepaper-Cyber-Security-AEN1732_07.pdf","https://horusscenario.com/CVE-information/","http://www.sma.de/en/statement-on-cyber-security.html","http://www.sma.de/fileadmin/content/global/specials/documents/cyber-security/Whitepaper-Cyber-Security-AEN1732_07.pdf"],"products":["sma:sunny_boy_1.5_firmware","sma:sunny_boy_2.5_firmware","sma:sunny_boy_3.0_firmware","sma:sunny_boy_3.6_firmware","sma:sunny_boy_3000tl_firmware","sma:sunny_boy_3600_firmware","sma:sunny_boy_3600tl_firmware","sma:sunny_boy_4.0_firmware","sma:sunny_boy_4000tl_firmware","sma:sunny_boy_5.0_firmware","sma:sunny_boy_5000_firmware","sma:sunny_boy_5000tl_firmware","sma:sunny_boy_storage_2.5_firmware","sma:sunny_central_1000cp_xt_firmware","sma:sunny_central_2200_firmware","sma:sunny_central_500cp_xt_firmware","sma:sunny_central_630cp_xt_firmware","sma:sunny_central_720cp_xt_firmware","sma:sunny_central_760cp_xt_firmware","sma:sunny_central_800cp_xt_firmware","sma:sunny_central_850cp_xt_firmware","sma:sunny_central_900cp_xt_firmware","sma:sunny_central_storage_1000_firmware","sma:sunny_central_storage_2200_firmware","sma:sunny_central_storage_2500-ev_firmware","sma:sunny_central_storage_500_firmware","sma:sunny_central_storage_630_firmware","sma:sunny_central_storage_720_firmware","sma:sunny_central_storage_760_firmware","sma:sunny_central_storage_800_firmware","sma:sunny_central_storage_850_firmware","sma:sunny_central_storage_900_firmware","sma:sunny_tripower_12000tl_firmware","sma:sunny_tripower_15000tl_firmware","sma:sunny_tripower_20000tl_firmware","sma:sunny_tripower_25000tl_firmware","sma:sunny_tripower_5000tl_firmware","sma:sunny_tripower_60_firmware","sma:sunny_tripower_core1_firmware"],"source":"nvd","synced_at":"2026-10-19T20:44:47.710380879+00:00"},"epss":{"cve":"CVE-2017-9857","score":0.00689,"percentile":0.52776,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}