CVE-2017-9856 — An issue was discovered in SMA Solar Technology products
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 au
Published
2017-08-05T17:29:00.583
Last modified
2026-05-13T00:24:29.033
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
01What is this vulnerability?
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…
02Affected products
No structured affected-product list available — see references below for vendor advisories.
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2017-08-05T17:29:00.583
- Last modified: 2026-05-13T00:24:29.033
09References
- www.sma.de — http://www.sma.de/en/statement-on-cyber-security.html
- www.sma.de — http://www.sma.de/fileadmin/content/global/specials/documents/cyber-security/Whi…
- horusscenario.com — https://horusscenario.com/CVE-information/
- www.sma.de — http://www.sma.de/en/statement-on-cyber-security.html
- www.sma.de — http://www.sma.de/fileadmin/content/global/specials/documents/cyber-security/Whi…
- horusscenario.com — https://horusscenario.com/CVE-information/
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