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750 8100 FirmwareOperating system · Wago

CVE-2022-3281

HIGH · 7.5 CVSS v3.1 Published 2022-10-17
Fix available
A fix is available. Upgrade to after 03.10.08 or later.
See remediation →
84/100
Remediation priority · High
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
WAGO Series PFC100/PFC200, Series Touch Panel 600, Compact Controller CC100 and Edge Controller in multiple versions are prone to a loss of MAC-Address-Filtering after reboot. This may allow an remote attacker to circumvent the reach the network that should be protected by the MAC address filter.

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 confidence

WAGO PFC100/PFC200, Touch Panel 600, CC100, and Edge Controllers lose MAC address filtering configuration after device reboot. This causes the network protection mechanism to fail, potentially allowing unauthorized remote attackers to reach protected network segments that should be restricted by MAC filtering.

MitigationContact WAGO for available firmware updates that address the MAC address filtering loss issue. In the interim, implement compensating controls such as network segmentation, VLANs, or additional authentication mechanisms to protect affected devices.

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
750 8100 FirmwareOperating system
Affected:>= 03.01.07\(13\), <= 03.10.08\(22\)
750 8101 FirmwareOperating system
Affected:>= 03.01.07\(13\), <= 03.10.08\(22\)
750 8101\/000 010 FirmwareOperating system
Affected:>= 03.01.07\(13\), <= 03.10.08\(22\)
750 8101\/025 000 FirmwareOperating system
Affected:>= 03.01.07\(13\), <= 03.10.08\(22\)
750 8102 FirmwareOperating system
Affected:>= 03.01.07\(13\), <= 03.10.08\(22\)
750 8102\/025 000 FirmwareOperating system
Affected:>= 03.01.07\(13\), <= 03.10.08\(22\)
750 8202\/000 011 FirmwareOperating system
Affected:>= 03.01.07\(13\), <= 03.10.08\(22\)
750 8202\/000 012 FirmwareOperating system
Affected:>= 03.01.07\(13\), <= 03.10.08\(22\)

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
None
Integrity
High
Availability
None

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

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

  1. Identify WAGO device model
    Locate the device label or check the device web interface/system info to confirm the exact model number (e.g., 750-8100, 750-8101, 750-8102, 750-8202 variants)
    Affected if Device is any of the following: PFC100, PFC200, Touch Panel 600, CC100, or Edge Controllers with 750 series part numbers matching 8100, 8101, 8102, or 8202 families
  2. Check installed firmware version
    Access the device web interface, CLI, or system information page to retrieve the current firmware version number
    Affected if Firmware version falls within range >= 03.01.07(13) and <= 03.10.08(22)
  3. Verify MAC filtering is configured
    Navigate to the device network settings or MAC filtering configuration section to confirm at least one MAC address filter rule is defined
    Affected if MAC filtering rules are present in the device configuration
  4. Test MAC filtering persistence after reboot
    Document current MAC filter rules, then reboot the device (or power cycle), and re-examine the MAC filtering configuration to see if rules are retained
    Affected if MAC filtering rules are lost or cleared after reboot while previously configured

Affected if the device is a WAGO PFC100/PFC200, Touch Panel 600, CC100, or Edge Controller with firmware version 03.01.07(13) through 03.10.08(22) and MAC address filtering was configured but does not persist after reboot.

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 03.10.08
Interim mitigation

Contact WAGO for available firmware updates that address the MAC address filtering loss issue. In the interim, implement compensating controls such as network segmentation, VLANs, or additional authentication mechanisms to protect affected devices.

Recommended fix Moderate confidence

Firmware version > 03.10.08(22)

  1. 1. Identify the specific WAGO device model (PFC100, PFC200, Touch Panel 600, CC100, or Edge Controller) from the affected product list
  2. 2. Obtain the latest firmware version from WAGO's official support channels (cert.vde.com or wago.com)
  3. 3. Before upgrading, backup the current device configuration including MAC address filter settings
  4. 4. Upload the new firmware to the device via the WAGO management interface (web-based or PFC100/200 tools)
  5. 5. Perform the firmware upgrade following WAGO's official upgrade procedure
  6. 6. After upgrade, verify that MAC address filtering configuration persists across device reboots
  7. 7. Test that the MAC address filter is correctly enforced after a power cycle
Caveat Review WAGO release notes for the specific firmware version for any configuration changes or migration requirements

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

Fix this in 750 8100 Firmware Scoped from the published advisory
  • Consultation8.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA4.0 h
30.0 hours of engineering $5,380
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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-2022-3281 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