CVE-2022-46306
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 · uneditedChangingTec ServiSign component has a path traversal vulnerability due to insufficient filtering for special characters in the DLL file path. An unauthenticated remote attacker can host a malicious website for the component user to access, which triggers the component to load malicious DLL files under arbitrary file path and allows the attacker to perform arbitrary system operation and disrupt of service.
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 confidenceChangingTec ServiSign component contains a path traversal vulnerability in DLL file path handling due to insufficient filtering of special characters. An unauthenticated remote attacker can host a malicious website that, when accessed by a ServiSign user, triggers the component to load malicious DLL files from arbitrary file paths, enabling arbitrary system operations or service disruption.
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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 if Changingtec ServiSign is installedCheck system for ServiSign installation by searching for ServiSign-related executables, DLL files, or installed services. Common locations: Program Files, application data directories, or system services list.Affected if Changingtec ServiSign component is present on the system regardless of version
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Inspect DLL loading configurationExamine the ServiSign configuration files or registry entries that control DLL file path handling. Look for settings related to DLL loading, plugin paths, or module configuration.Affected if DLL loading configuration exists and permits external or relative DLL file paths without strict validation
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Check for path traversal in DLL pathsReview application logs, configuration files, or network traffic for DLL path parameters that contain special characters like ../ (dot-dot-slash) or absolute paths pointing to non-standard directories.Affected if DLL path parameters accept or use unsanitized path input with special characters allowing traversal
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Verify external DLL loading capabilityTest or inspect whether ServiSign can load DLL files from user-controlled paths, network locations, or directories outside the expected application installation folder.Affected if The component loads DLLs from arbitrary file paths rather than only from a hardened, application-controlled directory
If Changingtec ServiSign is installed and the DLL loading feature processes paths without strict validation, the system is vulnerable to path traversal attacks allowing malicious DLL injection.
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 input validation and path sanitization for DLL file paths, using allowlist validation and ensuring absolute path resolution before loading. Consider implementing code signing verification and secure DLL loading mechanisms.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2022-46306 — 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-2022-46306 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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