Description
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
References (3)
Core 3
Core References
Various Sources x_refsource_misc
http://www.sma.de/en/statement-on-cyber-security.html
Third Party Advisory x_refsource_misc
https://horusscenario.com/CVE-information/
Various Sources x_refsource_misc
http://www.sma.de/fileadmin/content/global/specials/documents/cyber-security/Whitepaper-Cyber-Security-AEN1732_07.pdf
Scores
CVSS v3
9.8
EPSS
0.0113
EPSS Percentile
62.1%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-327
Status
published
Products (39)
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
... and 29 more
Published
Aug 05, 2017
Tracked Since
Feb 18, 2026