CVE-2017-9862
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn issue was discovered in SMA Solar Technology products. When signed into Sunny Explorer with a wrong password, it is possible to create a debug report, disclosing information regarding the application and allowing the attacker to create and save a .txt file with contents to his liking. An attacker may use this for information disclosure, or to write a file to normally unavailable locations on the local system. NOTE: the vendor reports that "the information contained in the debug report is of marginal significance." Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceIn Sunny Explorer (SMA Solar Technology), a vulnerability allows any user who can authenticate (even with incorrect credentials) to generate a debug report that discloses application information and enables arbitrary .txt file creation/writing to local system locations. The debug report functionality improperly validates access rights and file write operations.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE dataall versionsCVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm Sunny Explorer installationCheck for Sunny Explorer application in program directories (typically C:\Program Files\SMA\Sunny Explorer or C:\Program Files (x86)\SMA\Sunny Explorer) and verify the executable existsAffected if Sunny Explorer is installed on the system
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Locate debug report functionalityExplore the Sunny Explorer application interface for a debug report or diagnostic report generation feature, typically found under Settings, Tools, or Help menusAffected if Debug report generation feature is present and accessible within the application
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Test authentication bypass for debug reportsLaunch Sunny Explorer and attempt to generate a debug report using clearly invalid credentials (such as username: test, password: wrong). Observe whether the debug report is generated despite authentication failureAffected if Debug report is generated even with incorrect/invalid credentials
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Inspect for created debug filesSearch the local system for recently created debug report files, typically with extensions like .txt, .log, or .xml in the application data folder (%APPDATA%\SMA\Sunny Explorer or similar)Affected if Debug report files exist that were created without valid authentication
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Check for arbitrary .txt file creationReview the application directory and user-writable locations (Documents, Desktop, AppData) for .txt files that may have been created by the debug report feature outside of expected logging behaviorAffected if Unexpected .txt files exist in system locations that could have been created via the vulnerable debug report feature
If Sunny Explorer is installed and its debug report feature generates reports or creates files when provided with invalid credentials, the environment is affected by CVE-2017-9862.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataRestrict debug report generation to properly authenticated sessions with valid credentials, and implement strict validation/sanitization on file write operations to prevent arbitrary file creation. Consider disabling debug report functionality in production releases or requiring elevated privileges.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2017-9862 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2017-9862 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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