CVE-2017-5261
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 · uneditedIn versions 4.3.2-R4 and prior of Cambium Networks cnPilot firmware, the 'ping' and 'traceroute' functions of the web administrative console expose a file path traversal vulnerability, accessible to all authenticated users.
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 confidenceThe cnPilot firmware versions 4.3.2-R4 and prior contain a path traversal vulnerability in the ping and traceroute functions of the web administrative interface. Authenticated users can manipulate file path parameters to access files outside the intended directory, potentially reading sensitive system files.
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 data<= 4.3.2-r4<= 4.3.2-r4<= 4.3.2-r4<= 4.3.2-r4<= 4.3.2-r4CVSS 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
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/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 device modelAccess the web administrative interface or use SNMP/CLI to identify the exact cnPilot model (R190v, E410, R190n, E400, or E600)Affected if Device is not one of the listed affected models - vulnerability does not apply
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Check firmware versionNavigate to the web interface status page or use CLI command 'show version' to retrieve the installed firmware versionAffected if Firmware version is greater than 4.3.2-r4 - user is not affected; if version is 4.3.2-r4 or lower, proceed to next check
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Verify web administrative interface statusCheck if the web administrative interface (HTTP/HTTPS) is enabled and reachable on the deviceAffected if Web interface is disabled - the attack surface is not exposed
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Confirm authentication configurationReview the device security settings to verify whether authentication is required for web interface accessAffected if Web interface is accessible without authentication - the path traversal may still be exploitable but requires different attack vector
User is affected if the device is a cnPilot R190v, E410, R190n, E400, or E600 running firmware version 4.3.2-r4 or lower AND the web administrative interface is enabled and accessible.
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 dataUpdate to a patched firmware version beyond 4.3.2-R4 if available; otherwise restrict administrative web interface access to trusted IP addresses or implement network segmentation to limit exposure to authenticated users.
- Consultation3.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,832.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-5261 — 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-2017-5261 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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