CVE-2017-9859: SMA Sunny Boy 1.5 Firmware

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

An issue was discovered in SMA Solar Technology products. The inverters make use of a weak hashing algorithm to encrypt the password for REGISTER requests. This hashing algorithm can be cracked relatively easily. An attacker will likely be able to crack the password using offline crackers. This cracked password can then be used to register at the SMA servers. NOTE: the vendor's position is that "we consider the probability of the success of such manipulation to be extremely low." Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected

Affected products

• SMA Sunny Boy 1.5 Firmware: affected versions not specified
• SMA Sunny Boy 2.5 Firmware: affected versions not specified
• SMA Sunny Boy 3.0 Firmware: affected versions not specified
• SMA Sunny Boy 3.6 Firmware: affected versions not specified
• SMA Sunny Boy 3000tl Firmware: affected versions not specified
• SMA Sunny Boy 3600 Firmware: affected versions not specified
• SMA Sunny Boy 3600tl Firmware: affected versions not specified
• SMA Sunny Boy 4.0 Firmware: affected versions not specified
• SMA Sunny Boy 4000tl Firmware: affected versions not specified
• SMA Sunny Boy 5.0 Firmware: affected versions not specified
• SMA Sunny Boy 5000 Firmware: affected versions not specified
• SMA Sunny Boy 5000tl Firmware: affected versions not specified
• SMA Sunny Boy Storage 2.5 Firmware: affected versions not specified
• SMA Sunny Central 1000cp Xt Firmware: affected versions not specified
• SMA Sunny Central 2200 Firmware: affected versions not specified
• SMA Sunny Central 500cp Xt Firmware: affected versions not specified
• SMA Sunny Central 630cp Xt Firmware: affected versions not specified
• SMA Sunny Central 720cp Xt Firmware: affected versions not specified
• SMA Sunny Central 760cp Xt Firmware: affected versions not specified
• SMA Sunny Central 800cp Xt Firmware: affected versions not specified
• SMA Sunny Central 850cp Xt Firmware: affected versions not specified
• SMA Sunny Central 900cp Xt Firmware: affected versions not specified
• SMA Sunny Central Storage 1000 Firmware: affected versions not specified
• SMA Sunny Central Storage 2200 Firmware: affected versions not specified
• SMA Sunny Central Storage 2500-Ev Firmware: affected versions not specified
• and 14 more

Published 2017-08-05. Last modified 2026-06-17.