An issue was discovered in SMA Solar Technology products. A secondary authentication system is available for Installers called the Grid Guard system. This system uses predictable codes, and a single Grid Guard code can be used on any SMA inverter. Any such code, when combined with the installer account, allows changing very sensitive parameters. NOTE: the vendor reports that Grid Guard is not an authentication feature; it is only a tracing feature. Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected
| Date Added | Due Date | Vulnerability Name | Required Action |
|---|---|---|---|
| N/A |
| Type | Version | Base score | Base severity | Vector |
|---|---|---|---|---|
| Secondary | 3.1 | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Primary | 3.0 | 9.8 | CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Primary | 2.0 | 7.5 | HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| CWE ID | Type | Source |
|---|---|---|
| NVD-CWE-noinfo | Primary | nvd@nist.gov |
| CWE-863 | Secondary | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| Hyperlink | Source | Resource |
|---|---|---|
| http://www.sma.de/en/statement-on-cyber-security.html | cve@mitre.org | N/A |
| http://www.sma.de/fileadmin/content/global/specials/documents/cyber-security/Whitepaper-Cyber-Security-AEN1732_07.pdf | cve@mitre.org | N/A |
| https://horusscenario.com/CVE-information/ | cve@mitre.org | Third Party Advisory |
| http://www.sma.de/en/statement-on-cyber-security.html | af854a3a-2127-422b-91ae-364da2661108 | N/A |
| http://www.sma.de/fileadmin/content/global/specials/documents/cyber-security/Whitepaper-Cyber-Security-AEN1732_07.pdf | af854a3a-2127-422b-91ae-364da2661108 | N/A |
| https://horusscenario.com/CVE-information/ | af854a3a-2127-422b-91ae-364da2661108 | Third Party Advisory |