CVE-2021-22667
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 · uneditedBB-ESWGP506-2SFP-T versions 1.01.09 and prior is vulnerable due to the use of hard-coded credentials, which may allow an attacker to gain unauthorized access and permit the execution of arbitrary code on the BB-ESWGP506-2SFP-T (versions 1.01.01 and prior).
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 BB-ESWGP506-2SFP-T industrial Ethernet switch versions 1.01.09 and prior contains hard-coded credentials embedded in the firmware. These credentials allow remote attackers to bypass authentication and gain full administrative access to the device, potentially enabling arbitrary code execution.
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<= 1.01.09CVSS 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 the device modelLog into the switch web interface or check the device label/sticker to confirm the model is BB-ESWGP506-2SFP-T or Advantech Bb Eswgp506 2sfp TAffected if The device model matches BB-ESWGP506-2SFP-T
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Check the installed firmware versionAccess the switch web interface via browser or use SNMP to retrieve the firmware version. Typically found under System > Information or System > Firmware Upgrade in the web GUIAffected if The firmware version is 1.01.09 or lower (any version <= 1.01.09)
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Verify network accessibility of management interfaceCheck if the switch administrative interface (HTTP/HTTPS on ports 80/443 or telnet/SSH) is directly accessible from untrusted networks or the internet. Use nmap or similar tool to scan the device IP for open management portsAffected if The management interface is exposed to untrusted networks without firewall protection
If the device is a BB-ESWGP506-2SFP-T with firmware version 1.01.09 or lower and its management interface is network-accessible, the environment is affected by this hard-coded credential 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 dataUpdate the device firmware to a version that removes hard-coded credentials; if no patched firmware is available, contact the vendor, change default credentials immediately, and isolate the device behind a firewall or in a restricted network segment.
- Consultation2.0 h
- Implementation4.0 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 $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-22667 — 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-2021-22667 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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- Version or environment caveats, and links to real fixes
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