CVE-2022-31806

mediumpriority · track · 27OT risk · elevatedEPSS 0.012 · 69 %ileDEEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.23% (69th) EPSS
CVSS 6.8 · medium
Is it mine?
138 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · cisa_csaf_ot · festo_psirt

EPSS · scored 2026-10-27

In CODESYS V2 PLCWinNT and Runtime Toolkit 32 in versions prior to V2.4.7.57 password protection is not enabled by default and there is no information or prompt to enable password protection at login in case no password is set at the controller.

01

remediations

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

A vendor fix is available.

  • Fixedwago_psirt

    WAGO recommends that all affected users with WAGO I/O-PRO/CODESYS 2.3 PLCs update to the firmware and use the latest version of WAGO I/O-Pro as soon as it is available. Until the updates are available, we recommend switching off the CODESYS IP port 2455 after commissioning or, if this not possible, use a strong admin password. ### PFC200 Family | Ord. No. | Firmware | |-----------------------|----------------------------------| | 750-8202/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-8203/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-8204/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-8206/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-8207/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-8208/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-8210/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-8211/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-8212/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-8213/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-8214/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-8216/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-8217/xxx-xxx | UPDATE B: Available in Q1 2024 | ### Ethernet Controller 4th Generation Family – UPDATE B | Ord. No. | Firmware | |-----------------------|----------------------------------| | 750-823 | UPDATE B: Available in Q1 2024 | | 750-332 | UPDATE B: Available in Q1 2024 | | 750-832/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-862 | UPDATE B: Available in Q1 2024 | | 750-890/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-891 | UPDATE B: Available in Q1 2024 | | 750-893 | UPDATE B: Available in Q1 2024 | ### Ethernet Controller 3rd Generation Family – UPDATE B | Ord. No. | Firmware | |-----------------------|----------------------------------| | 750-331 | UPDATE B: Available in Q1 2024 | | 750-829 | UPDATE B: Available in Q1 2024 | | 750-831/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-852 | UPDATE B: Available in Q1 2024 | | 750-880/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-881 | UPDATE B: Available in Q1 2024 | | 750-882 | UPDATE B: Available in Q1 2024 | | 750-885/xxx-xxx | UPDATE B: Available in Q1 2024 | | 750-889 | UPDATE B: Available in Q1 2024 | ### Engineering Software | Name | Firmware | |------------------|----------------------------------| | WAGO-I/O-PRO 32 | UPDATE B: Available in Q1 2024 |

  • Mitigationfesto_psirt

    Festo has identified the following compensatory measures to reduce the risk: - For CVE-2022-31806: Enable password protection at login in case no password is set at the controller. Please note that the password configuration file is not covered via default FFT backup & Restore mechanism, you must select the related file manually.

  • MitigationFesto Automation Suite <2.8.0.138 installed with CODESYS Development System 3.0festo_psirt

    Starting from Festo Automation Suite version 2.8.0.138, Codesys is no longer bundled with the suite and must be downloaded and installed separately by the customer. To mitigate this vulnerability customers are advised to: Download the latest, patched version of Codesys directly from the official Codesys website. Follow the installation and update instructions provided by Codesys to ensure all security fixes are applied. Regularly monitor Codesys security advisories and apply updates promptly. Maintain the Festo Automation Suite connector up to date by installing FAS updates as released by Festo.

  • MitigationFesto Automation Suite <2.8.0.138 installed with CODESYS Development System 3.5.16.10festo_psirt

    Starting from Festo Automation Suite version 2.8.0.138, Codesys is no longer bundled with the suite and must be downloaded and installed separately by the customer. To mitigate this vulnerability customers are advised to: Download the latest, patched version of Codesys directly from the official Codesys website. Follow the installation and update instructions provided by Codesys to ensure all security fixes are applied. Regularly monitor Codesys security advisories and apply updates promptly. Maintain the Festo Automation Suite connector up to date by installing FAS updates as released by Festo.

  • Mitigationwago_psirt

    For vulnerabilities CVE-2022-1965, CVE-2022-32136, CVE-2022-32137, CVE-2022-32138, CVE-2022-32139, CVE-2022-32140, CVE-2022-32141, CVE-2022-32142, CVE-2022-32143 (CODESYS Advisory 2022-11): - Activation of online user management, to prevent unallowed actions from unauthorized attackers - Setting strong passwords - Use e!Runtime or CODESYS V3 For vulnerabilities CVE-2022-31805, CVE-2022-31806 (CODESYS Advisory 2022-12): - Activation of online user management, to prevent unallowed actions from unauthorized attackers - Use encryption of online communication whenever possible, this protects password transmission.

  • Mitigation-Q-cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Compact Vision System SBO-Q-cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Control block CPX-CEC Codesys V2cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Control block CPX-CEC-C1 Codesys V2cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Control block CPX-CEC-C1-V3 Codesys V3cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Control block CPX-CEC-M1 Codesys V2cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Control block CPX-CEC-M1-V3 Codesys V3cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Control block CPX-CEC-S1-V3 Codesys V3cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Control block CPX-CMXXcisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CECC-Dcisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CECC-D-BAcisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CECC-D-CScisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CECC-LKcisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CECC-Scisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CECC-X-M1cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CECC-X-M1-MVcisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CECC-X-M1-S1cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CECX-X-C1cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CECX-X-M1cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CPX-E-CEC-C1cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CPX-E-CEC-C1-EPcisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CPX-E-CEC-C1-PNcisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CPX-E-CEC-M1cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CPX-E-CEC-M1-EPcisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller CPX-E-CEC-M1-PNcisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Controller FED-CECcisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Operator unit CDPX-X-A-S-10cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Operator unit CDPX-X-A-W-13cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Operator unit CDPX-X-A-W-4cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Operator unit CDPX-X-A-W-7cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Operator unit CDPX-X-E1-W-10cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Operator unit CDPX-X-E1-W-15cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Software Operator unit CDPX-X-E1-W-7cisa_csaf_ot

    Festo has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • MitigationFesto Automation Suite <2.8.0.138 installed with CODESYS Development System 3.0cisa_csaf_ot

    Starting from Festo Automation Suite version 2.8.0.138, Codesys is no longer bundled with the suite and must be downloaded and installed separately by the customer. To mitigate this vulnerability customers are advised to: Download the latest, patched version of Codesys directly from the official Codesys website. Follow the installation and update instructions provided by Codesys to ensure all security fixes are applied. Regularly monitor Codesys security advisories and apply updates promptly. Maintain the Festo Automation Suite connector up to date by installing FAS updates as released by Festo.

  • MitigationFesto Automation Suite <2.8.0.138 installed with CODESYS Development System 3.5.16.10cisa_csaf_ot

    Starting from Festo Automation Suite version 2.8.0.138, Codesys is no longer bundled with the suite and must be downloaded and installed separately by the customer. To mitigate this vulnerability customers are advised to: Download the latest, patched version of Codesys directly from the official Codesys website. Follow the installation and update instructions provided by Codesys to ensure all security fixes are applied. Regularly monitor Codesys security advisories and apply updates promptly. Maintain the Festo Automation Suite connector up to date by installing FAS updates as released by Festo.

02

cvss

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

9.8
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.8–9.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · info@cert.vde.comexploitability 3.9 · impact 5.9
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · WAGO PSIRT DE
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · Festo 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)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1188USCWE-1188USCWE-1188USCWE-1188US
04

affected products (138)

Products and version ranges known to be affected.

showing 20 of 138
05

advisories (5)

Vendor and ecosystem advisories describing this.

  • FSA-202208Festo: Multiple Festo products contain an unsafe default Codesys configuration2022-11-29csaf · festo_psirtDE

    The products are shipped with an unsafe configuration of the integrated CODESYS Runtime environment. In this case no default password is set to the CODESYS PLC and therefore access without authentication is possible. With a successful established connection to the CODESYS Runtime the PLC-Browser commands are available. Thus granting the possibilities to e.g. read and modify the configuration file(s), start/stop the application and reboot the device.

  • FSA-202601Several CODESYS vulnerabilities in Festo Automation Suite2026-02-26csaf · festo_psirtDE

    Starting with Festo Automation Suite (FAS) version 2.8.0.138, the suite is delivered only with a connector to Codesys, rather than including Codesys directly. Prior to this version, Codesys was bundled within the FAS installation. From version 2.8.0.138 onwards, customers are required to download and install Codesys independently. This change impacts the handling of security vulnerabilities (CVEs) related to Codesys. Any Codesys-related security issues must now be addressed by the customer through their separate Codesys installation. The FAS itself includes only the connector component, which is maintained and updated within the suite. Please ensure that Codesys is kept up to date independently to mitigate any potential security risks associated with the Codesys software.

  • VDE-2022-040WAGO: Multiple Vulnerabilities in Controller with WAGO I/O-Pro / CODESYS 2.3 Runtime2022-10-17csaf · wago_psirtDE

    UPDATE A: Solution has updated release datesUPDATE B: Solution has updated release datesThis Advisory is published with reference to: CODESYS Advisory 2022-11 (Security update for CODESYS Control V2) CODESYS Advisory 2022-12 (Security update for CODESYS V2 password transport) CODESYS Advisory 2022-13 (Security update for CODESYS Gateway V2)

  • ICSA-25-329-05Festo Compact Vision System, Control Block, Controller, and Operator Unit products2025-11-25icsa · cisa_csaf_otUS

    Successful exploitation of these vulnerabilities could result in an attacker accessing devices without authentication or modifying configuration files.

  • ICSA-26-076-01CODESYS in Festo Automation Suite2026-02-26icsa · cisa_csaf_otUS

    Starting with Festo Automation Suite (FAS) version 2.8.0.138, the suite is delivered only with a connector to Codesys, rather than including Codesys directly. Prior to this version, Codesys was bundled within the FAS installation. From version 2.8.0.138 onwards, customers are required to download and install Codesys independently. This change impacts the handling of security vulnerabilities (CVEs) related to Codesys. Any Codesys-related security issues must now be addressed by the customer through their separate Codesys installation. The FAS itself includes only the connector component, which is maintained and updated within the suite. Please ensure that Codesys is kept up to date independently to mitigate any potential security risks associated with the Codesys software.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcisa_csaf_otfesto_psirtwago_psirtNVDCVE.orgMITRE
published 2022-06-24modified 2026-06-17
08

references (5)

External citations — patches, advisories, analysis.

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