CVE-2017-9860
An attacker can use Sunny Explorer or the SMAdata2+ network protocol to update the device firmware without ever having to authenticate.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in SMA Solar Technology products. An attacker can use Sunny Explorer or the SMAdata2+ network protocol to update the device firmware without ever having to authenticate. If an attacker is able to create a custom firmware version that is accepted by the inverter, the inverter is compromised completely. This allows the attacker to do nearly anything: for example, giving access to the local OS, creating a botnet, using the inverters as a stepping stone into companies, etc. NOTE: the vendor reports that this attack has always been blocked by "a final integrity and compatibility check." Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.24% probability · 83th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- sma/sunny boy 3600 firmware · sma/sunny boy 5000 firmware · sma/sunny tripower core1 firmware · sma/sunny tripower 15000tl firmware · sma/sunny tripower 20000tl firmware · sma/sunny tripower 25000tl firmware · sma/sunny tripower 5000tl firmware · sma/sunny tripower 12000tl firmware · sma/sunny tripower 60 firmware · sma/sunny boy 3000tl firmware · sma/sunny boy 3600tl firmware · sma/sunny boy 4000tl firmware · sma/sunny boy 5000tl firmware · 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 4.0 firmware · sma/sunny boy 5.0 firmware · sma/sunny central 2200 firmware · +19 more
- Source
- cve@mitre.org
EPSS 2.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.sma.de/en/statement-on-cyber-security.html
- http://www.sma.de/fileadmin/content/global/specials/documents/cyber-security/Whitepaper-Cyber-Security-AEN1732_07.pdf
- https://horusscenario.com/CVE-information/Third Party Advisory
- http://www.sma.de/en/statement-on-cyber-security.html
- http://www.sma.de/fileadmin/content/global/specials/documents/cyber-security/Whitepaper-Cyber-Security-AEN1732_07.pdf
- https://horusscenario.com/CVE-information/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.