CVE-2022-39186
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 · uneditedEXFO - BV-10 Performance Endpoint Unit misconfiguration. System configuration file has misconfigured permissions
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 confidenceThe EXFO BV-10 Performance Endpoint Unit contains a system configuration file with improperly set file permissions, likely allowing unauthorized users or processes to read or modify sensitive configuration data.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/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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Identify the EXFO BV-10 device on your networkLocate and confirm the EXFO BV-10 Performance Endpoint Unit in your environment inventory or network discoveryAffected if The device is present and running any firmware version
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Access the device configuration interfaceLog into the EXFO BV-10 management interface or access the device via console/SSH to reach the file systemAffected if You can access the device shell or file system
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Locate the system configuration fileNavigate to the system configuration directory and identify configuration files containing system settings, credentials, or network parametersAffected if Configuration files exist on the device and contain sensitive data
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Check file permissions on configuration filesUse 'ls -la' or equivalent command to view file permissions (owner, group, world read/write/execute bits) on the configuration filesAffected if Permissions allow read or write access to unauthorized users or groups (e.g., world-readable, group-writable, or other permissive settings)
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Verify if sensitive data is exposedAttempt to read the configuration file as a non-privileged or unauthorized user account to confirm accessibilityAffected if An unauthorized user can read or modify the configuration file contents
Your environment is affected if you have an EXFO BV-10 device where the system configuration file permissions allow access by unauthorized users or processes.
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 dataReview and correct the file permissions on the affected system configuration file to enforce proper access controls, restricting read/write access to authorized users or processes only.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-39186 — 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-2022-39186 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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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