CVE-2017-9856: SMA Sunny Boy 1.5 Firmware

Low severity, CVSS 3.4. EPSS: 0.7% chance of exploitation in the next 30 days.

An issue was discovered in SMA Solar Technology products. Sniffed passwords from SMAdata2+ communication can be decrypted very easily. The passwords are "encrypted" using a very simple encryption algorithm. This enables an attacker to find the plaintext passwords and authenticate to the device. NOTE: the vendor reports that 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.