CVE-2022-3281Network attack vector

Network access bypass via unrecovered MAC filtering

Published Oct 17, 2022 · Updated May 10, 2025

Firewall control failure in WAGO controllers and Touch Panel 600 firmware allows remote attackers to bypass MAC filtering after reboot. The device firewall startup path fails to reactivate its configured MAC address filter when the device restarts, leaving protected network paths reachable. Exploitation requires a reboot and network reachability; it bypasses only MAC-based access control, with no reported confidentiality or availability impact.

CVSS severity7.5
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Firewall control failure in WAGO controllers and Touch Panel 600 firmware allows remote attackers to bypass MAC filtering after reboot. The device firewall startup path fails to reactivate its configured MAC address filter when the device restarts, leaving protected network paths reachable. Exploitation requires a reboot and network reachability; it bypasses only MAC-based access control, with no reported confidentiality or availability impact.

The record

CVE
CVE-2022-3281
Published
Oct 17, 2022
Updated
May 10, 2025
Vendor
WAGO
Product
PFC200 Controller
Classifications
CWE-440, T1562.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 17, 2022CVE publishedPublication date reported by the CVE source.
  2. May 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=03.01.07(13) <=03.10.08(22)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WAGO · PFC200 Controllerversion=03.01.07(13) <=03.10.08(22)
WAGO · Touch Panel 600 Advanced Lineversion=03.01.07(13) <=03.10.09(22)
WAGO · Touch Panel 600 Marine Lineversion=03.01.07(13) <=03.10.09(22)
WAGO · Compact Controller 100version=03.07.17(19) <=03.09.08(21)
WAGO · WAGO Edge Controller 752-8303/8000-002version=03.06.09(18) <=03.10.09(22)
WAGO · PFC200 Controller (750-8217)version=03.04.10(16) <=03.10.08(22)
WAGO · Touch Panel 600 Standard Lineversion=03.01.07(13) <=03.10.09(22)
WAGO · PFC100 Controllerversion=03.01.07(13) <=03.10.08(22)

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.5CERT@VDECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-440Expected Behavior Violation
T1562.004Disable or Modify System Firewall

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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