CVE-2022-50803
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 · uneditedJM-DATA ONU JF511-TV version 1.0.67 uses default credentials that allow attackers to gain unauthorized access to the device with administrative privileges.
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 JM-DATA ONU JF511-TV version 1.0.67 ships with hardcoded default administrative credentials that provide unrestricted access to the device's web management interface. Attackers with network access can authenticate using these default credentials to gain full administrative control over the device.
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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 model and firmware versionAccess the device's web management interface and check the status or system information page, or query the device via SNMP or UPnP if available, to retrieve the exact model number and firmware versionAffected if The device is a JM-DATA ONU JF511-TV running firmware version 1.0.67
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Check for hardcoded default credentials in useAttempt to authenticate to the web management interface using known default credential pairs (such as admin/admin, admin/1234, root/root, or similar common defaults for this device type)Affected if Any default credential pair successfully grants administrative access to the device
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Verify if default password has been changedLog into the device admin panel and navigate to the administration or user management settings to inspect whether the administrative password has been modified from its factory default valueAffected if The administrative password remains at the factory default setting
A user is affected if they are operating a JM-DATA ONU JF511-TV firmware 1.0.67 device where the default administrative credentials have not been changed and still provide full administrative access.
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 dataImmediately change the default administrative password to a strong, unique password on all affected devices. Disable remote management access if not required, and implement network segmentation to limit exposure of management interfaces.
- Consultation4.0 h
- Implementation8.0 h
- Testing2.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-50803 — 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-2022-50803 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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