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Skybridge Basic Mb A130 FirmwareOperating system · Seiko Sol

CVE-2023-22441

HIGH · 8.6 CVSS v3.1 Published 2023-05-10
Fix available
A fix is available. Upgrade to after 1.4.1 or later.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
Missing authentication for critical function exists in Seiko Solutions SkyBridge series, which may allow a remote attacker to obtain or alter the setting information of the product or execute some critical functions without authentication, e.g., rebooting the product. Affected products and versions are as follows: SkyBridge MB-A200 firmware Ver. 01.00.05 and earlier, and SkyBridge BASIC MB-A130 firmware Ver. 1.4.1 and earlier

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 confidence

Missing authentication for critical function in Seiko Solutions SkyBridge MB-A200 and MB-A130 devices allows remote unauthenticated attackers to obtain or modify device settings and execute critical operations like rebooting the device. The vulnerability is network-exploitable and affects firmware versions prior to 01.00.05 for MB-A200 and prior to 1.4.1 for MB-A130.

MitigationApply vendor firmware updates (Ver. 01.00.06 or later for MB-A200, Ver. 1.4.2 or later for MB-A130). If patches are unavailable, network segmentation and firewall rules should restrict access to the device management interfaces to trusted IP addresses only.

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
Skybridge Basic Mb A130 FirmwareOperating system
Affected:<= 1.4.1
Skybridge Mb A200 FirmwareOperating system
Affected:<= 01.00.05

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
Low
Integrity
Low
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify SkyBridge devices on the network
    Scan the network for Seiko Solutions SkyBridge MB-A200 or MB-A130 devices. These are industrial cellular gateways. Check device inventory or use network discovery tools to locate these specific models.
    Affected if Either MB-A200 or MB-A130 device is present on the network
  2. Check MB-A200 firmware version
    Access the device web interface or administrative console and navigate to the firmware version information page, typically found under System Status or Device Information. Alternatively, check via SNMP or the device's API endpoint if available.
    Affected if Firmware version is 01.00.05 or earlier
  3. Check MB-A130 firmware version
    Access the device web interface or administrative console and navigate to the firmware version information page, typically found under System Status or Device Information. Alternatively, check via SNMP or the device's API endpoint if available.
    Affected if Firmware version is 1.4.1 or earlier
  4. Verify device management interface exposure
    Determine if the device management web interface (typically ports 80/443 or custom ports) is accessible from untrusted network segments or the internet. Use network scanning to test accessibility from external IP ranges.
    Affected if The device management interface is reachable from untrusted networks or the internet without IP restriction

You are affected if you have a SkyBridge MB-A200 (firmware 01.00.05 or earlier) or MB-A130 (firmware 1.4.1 or earlier) device with its management interface exposed to untrusted networks.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Upgrade available Upgrade to a release after 1.4.1
Interim mitigation

Apply vendor firmware updates (Ver. 01.00.06 or later for MB-A200, Ver. 1.4.2 or later for MB-A130). If patches are unavailable, network segmentation and firewall rules should restrict access to the device management interfaces to trusted IP addresses only.

Recommended fix Moderate confidence

MB-A130: firmware 1.4.2 or later | MB-A200: firmware 01.00.06 or later

  1. Identify the specific SkyBridge model in use (MB-A130 or MB-A200)
  2. Contact Seiko Solutions or visit their official support website to obtain the firmware upgrade
  3. For MB-A130: Upgrade to firmware version 1.4.2 or later
  4. For MB-A200: Upgrade to firmware version 01.00.06 or later
  5. Follow the vendor's documented firmware update procedure to apply the patch
  6. After upgrading, verify that authentication is now required for critical functions
Caveat Review release notes for any configuration or functionality changes that may affect existing setup

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Skybridge Basic Mb A130 Firmware Scoped from the published advisory
  • Consultation8.0 h
  • Implementation4.0 h
  • Testing8.0 h
  • Review / QA4.0 h
24.0 hours of engineering $4,240
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-22441 in production — separate from our analysis above.

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What this is

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.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data