CVE-2020-12522

highpriority · track · 40EPSS 0.031 · 88 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

3.05% (88th) EPSS

CVSS 10 · high

Is it mine?

20 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · wago_psirt

EPSS · scored 2026-10-27

The reported vulnerability allows an attacker who has network access to the device to execute code with specially crafted packets in WAGO Series PFC 100 (750-81xx/xxx-xxx), Series PFC 200 (750-82xx/xxx-xxx), Series Wago Touch Panel 600 Standard Line (762-4xxx), Series Wago Touch Panel 600 Advanced Line (762-5xxx), Series Wago Touch Panel 600 Marine Line (762-6xxx) with firmware versions <=FW10.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedwago_psirt
The I/O-Check service protocol is only needed during installation and commissioning, not during normal operations. It is highly recommended to disable the I/O-Check service after commissioning. This is the easiest and securest way to protect your device from the listed vulnerabilities. Regardless to the action described above, the vulnerability has been fixed in FW11, released in December 2017.
Mitigationwago_psirt
* Disable I/O-Check service * Restrict network access to the device. * Do not directly connect the device to the internet.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · info@cert.vde.comexploitability 3.9 · impact 6

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · WAGO PSIRT DE

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimaryCWE-78US

affected products (20)

Products and version ranges known to be affected.

WAGO Series PFC 100 (750-81xx/xxx-xxx)≤ FW1 ≤FW10enisa_euvdEU
WAGO Series PFC 200 (750-82xx/xxx-xxx)≤ FW1 ≤FW10enisa_euvdEU
WAGO Series Wago Touch Panel 600 Advanced Line (762-5xxx)≤ FW1 ≤FW10enisa_euvdEU
WAGO Series Wago Touch Panel 600 Marine Line (762-6xxx)≤ FW1 ≤FW10enisa_euvdEU
WAGO Series Wago Touch Panel 600 Standard Line (762-4xxx)≤ FW1 ≤FW10enisa_euvdEU
wago pfc 100 firmware≤ 10nvdUScpe:2.3:o:wago:pfc_100_firmware:*:*:*:*:*:*:*:*
wago pfc 200 firmware≤ 10nvdUScpe:2.3:o:wago:pfc_200_firmware:*:*:*:*:*:*:*:*
wago touch panel 600 advanced firmware≤ 10nvdUScpe:2.3:o:wago:touch_panel_600_advanced_firmware:*:*:*:*:*:*:*:*
wago touch panel 600 marine firmware≤ 10nvdUScpe:2.3:o:wago:touch_panel_600_marine_firmware:*:*:*:*:*:*:*:*
wago touch panel 600 standard firmware≤ 10nvdUScpe:2.3:o:wago:touch_panel_600_standard_firmware:*:*:*:*:*:*:*:*
Firmware WAGO GmbH & Co. KG <=FW10 installed on 750-81xx/xxx-xxxall versionswago_psirtDE
Firmware WAGO GmbH & Co. KG <=FW10 installed on 750-82xx/xxx-xxxall versionswago_psirtDE
Firmware WAGO GmbH & Co. KG <=FW10 installed on 762-4xxxall versionswago_psirtDE
Firmware WAGO GmbH & Co. KG <=FW10 installed on 762-5xxxall versionswago_psirtDE
Firmware WAGO GmbH & Co. KG <=FW10 installed on 762-6xxxall versionswago_psirtDE
Firmware WAGO GmbH & Co. KG FW11 installed on 750-81xx/xxx-xxxall versionsfixedwago_psirtDE
Firmware WAGO GmbH & Co. KG FW11 installed on 750-82xx/xxx-xxxall versionsfixedwago_psirtDE
Firmware WAGO GmbH & Co. KG FW11 installed on 762-4xxxall versionsfixedwago_psirtDE
Firmware WAGO GmbH & Co. KG FW11 installed on 762-5xxxall versionsfixedwago_psirtDE
Firmware WAGO GmbH & Co. KG FW11 installed on 762-6xxxall versionsfixedwago_psirtDE

advisories (1)

Vendor and ecosystem advisories describing this.

VDE-2020-045WAGO: Command Injection Vulnerability in I/O-Check Service of multiple products2020-12-17csaf · wago_psirtDE
The reported vulnerability allows an attacker who has network access to the device to execute code with specially crafted packets.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd wago_psirt NVD CVE.org MITRE

published 2020-12-17modified 2026-06-17

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references (4)

External citations — patches, advisories, analysis.

scry

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