Description
An issue was discovered in SMA Solar Technology products. All inverters have a very weak password policy for the user and installer password. No complexity requirements or length requirements are set. Also, strong passwords are impossible due to a maximum of 12 characters and a limited set of characters. NOTE: the vendor reports that the 12-character limit provides "a very high security standard." 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
0.0172
EPSS Percentile
74.4%
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-521
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