CVE Tools
Sign in

CVE-2017-9856

Published: Aug 5, 2017Updated: May 13, 2026 Sources: CVE List NVDNVD-CWE-noinfo
NVD MITRE
3.4CVSSLOW
EPSS Score
0.7%
Top 53.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

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

CVSS Vector Breakdown

AV:NAC:HPR:NUI:RS:CC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

NVD-CWE-noinfoCWE-256

Affected Products

n/an/a
sunny boy 3600 firmwaresmaICS / OT / IoT
sunny boy 5000 firmwaresmaICS / OT / IoT
sunny tripower core1 firmwaresmaICS / OT / IoT
sunny tripower 15000tl firmwaresmaICS / OT / IoT
smacommercialUSICS / OT / IoTaka sunny boy 1.5 firmware, sunny boy 2.5 firmware, sunny boy 3000tl firmware
and 35 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

http://www.sma.de/en/statement-on-cyber-security.html
sma.de
https://horusscenario.com/CVE-information/
horusscenario.com
http://www.sma.de/fileadmin/content/global/specials/documents/cyber-security/Whitepaper-Cyber-Security-AEN1732_07.pdf
sma.de

Timeline

Published
Aug 5, 2017
Last Updated
May 13, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2017-9856 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows