CVE-2018-4068
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 exploitable information disclosure vulnerability exists in the ACEManager functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A HTTP request can result in disclosure of the default configuration for the device. An attacker can send an unauthenticated HTTP request to trigger this vulnerability.
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 confidenceAn unauthenticated attacker can send a specially crafted HTTP request to the ACEManager interface of Sierra Wireless AirLink ES450 firmware 4.9.3 to retrieve the device's default configuration settings, exposing sensitive system information without authentication.
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= 4.9.3CVSS 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
- Low
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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 device modelLog into the device web interface or check the device label to confirm it is a Sierra Wireless AirLink ES450 gatewayAffected if Device is not an AirLink ES450 model
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Check firmware versionNavigate to the ACEManager interface (typically http://[deviceIP]/acemanager) and look for the firmware version in the System Information or Status page, or use the CLI command 'show version' if availableAffected if Firmware version is 4.9.3
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Verify ACEManager accessibilityAttempt to access the ACEManager interface from a non-internal network location without providing credentials. Observe if the interface loads or returns any configuration dataAffected if ACEManager interface loads without requiring authentication
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Check for sensitive configuration exposureSend a crafted HTTP request to the ACEManager endpoint (such as /ajax/xxxxx or configuration retrieval paths) without authentication headers and examine if default configuration settings or sensitive system information is returnedAffected if Configuration data or sensitive system information is returned without authentication
If the device is a Sierra Wireless AirLink ES450 running firmware 4.9.3 and the ACEManager interface is accessible without authentication, the environment is affected by this vulnerability.
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 dataApply vendor-released firmware patch if available; otherwise, restrict HTTP/HTTPS access to the ACEManager interface using network segmentation or firewall rules to prevent unauthenticated external access.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-4068 — 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-2018-4068 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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