CVE-2026-11917
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 · uneditedA path traversal security issue exists within Rockwell Automation ThinManager® software due to improper limitation of file save operations within the API. An authenticated attacker could exploit this vulnerability to write arbitrary files to restricted system directories outside of the application's intended directory.
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 · high confidenceThis is a path traversal vulnerability in Rockwell Automation ThinManager's API where improper limitation of file save operations allows an authenticated attacker to write arbitrary files to restricted system directories outside the application's intended directory. The issue stems from insufficient input validation on file path parameters in the file save functionality.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- Low
- Authentication
- X
- User interaction
- None
- Scope
- X
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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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Identify ThinManager installationSearch for ThinManager installation directories (commonly at C:\Program Files\Rockwell Software\ThinManager or C:\Program Files (x86)\ThinManager) and locate the ThinManager.exe or related executable filesAffected if ThinManager software is found on the system
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Determine ThinManager versionRight-click ThinManager.exe, select Properties, and check the Version tab; or run 'ThinManager.exe /?' or check the About dialog within the applicationAffected if Installed version falls within the affected version range (compare against vendor advisory)
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Verify API service statusCheck if ThinManager's web API service is running by examining running services (services.msc) or checking for listening ports (typically 80/443 or custom API ports via netstat -an | findstr LISTENING)Affected if API service is running and accepting connections
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Confirm authenticated access to file save APIReview ThinManager configuration files (typically in the config directory) for API authentication settings; check if the file save endpoint (look for endpoints handling file upload/save operations) allows authenticated user accessAffected if File save API endpoint is accessible to authenticated users without additional restrictions
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Inspect file path validation in API configurationExamine ThinManager's API configuration files and logs for evidence of path traversal protections; check web.config or similar config files for input validation settings related to file operationsAffected if File save functionality lacks proper path validation or canonicalization as documented in the vulnerability description
Your environment is affected if ThinManager is installed with the API enabled, the file save endpoint is accessible to authenticated users, and the installed version is within the affected range without path validation controls in place.
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 dataImplement strict path validation and canonicalization in the affected API endpoints to ensure resolved file paths remain within the application's designated directory boundaries. Restrict file write operations to explicitly allowed paths.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-11917 — 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-2026-11917 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
- No weaponised exploit code, or anything meant to cause harm
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