CVE-2020-12069
highpriority · track · 31EPSS 0.002 · 7 %ileDEEUUSEPSS · scored 2026-10-27
In CODESYS V3 products in all versions prior V3.5.16.0 containing the CmpUserMgr, the CODESYS Control runtime system stores the online communication passwords using a weak hashing algorithm. This can be used by a local attacker with low privileges to gain full control of the device.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- Fixedpilz_psirt
PMI 6 primo, PMCprimo C: No product-specific countermeasures available, please follow the general countermeasures. • PMCprimo C2, PMCprimo MC: Installation of Firmware Version 03.08.00 This update does not resolve the vulnerabilities (CVE-2021-34595, CVE-2021-34596, CVE-2021-34593, CVE-2021-30186, CVE-2021-30188, CVE-2021-30195, CVE-2019-19789) in the CODESYS V2 runtime system. The V2 runtime system is still included for compatibility reasons but is no longer supported by Pilz. Please migrate your application to the V3 runtime system or follow the general countermeasures.
- FixedPMC programming tool 3.x.xpilz_psirt
Installation of the software version 3.5.17
- 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.
- MitigationPMC programming tool 3.x.xpilz_psirt
Use a hardware firewall, host-based firewall or comparable measures at network level toprotect against unauthorised network communication with the PC. Use a virus scanner or other measures to protect against malware. Only use CODESYS libraries and archives from trusted sources.
- Mitigationwago_psirt
CODESYS GmbH recommends the following general defense measures to reduce the risk of exploits: - Use controllers and devices only in a protected environment to minimize network exposure and ensure that they are not accessible from outside - Use firewalls to protect and separate the control system network from other networks - Use VPN (Virtual Private Networks) tunnels if remote access is required - Activate and apply user management and password features - Use encrypted communication links - Limit the access to both development and control system by physical means, operating system features, etc. - Protect both development and control system by using up to date virus detecting solutions For further impact information and risk mitigation, please refer to the official CODESYS Advisory Website at https://www.codesys.com/security/security-reports.html
- MitigationFesto Firmware (R05 (17.06.2016) = 2.3.8.0) installed on Festo Hardware Controller CECC-D (All versions)cisa_csaf_ot
(CVE-2020-12068, CVE-2022-22515, CVE-2022-22514, CVE-2022-22513, CVE-2021-36763, CVE-2021-33485, CVE-2020-10245, CVE-2020-15806, CVE-2019-9011, CVE-2019-9013, CVE-2020-12067, CVE-2020-12069, CVE-2021-36764, CVE-2019-5105, CVE-2021-29241, CVE-2021-29242, CVE-2022-22519, CVE-2022-22517, CVE-2018-0739) (Product Group: Festo Firmware (R05 (17.06.2016) = 2.3.8.0) installed on Festo Hardware Controller CECC-D(All versions), Festo Firmware (R06 (11.10.2016) = 2.3.8.1) installed on Festo Hardware Controller CECC-LK(All versions), Festo Firmware (R05 (17.06.2016) = 2.3.8.0) installed on Festo Hardware Controller CECC-S(All versions)): No fix planned. This issue will be handled with next hardware generation release.
- MitigationFesto Firmware (R05 (17.06.2016) = 2.3.8.0) installed on Festo Hardware Controller CECC-S (All versions)cisa_csaf_ot
(CVE-2020-12068, CVE-2022-22515, CVE-2022-22514, CVE-2022-22513, CVE-2021-36763, CVE-2021-33485, CVE-2020-10245, CVE-2020-15806, CVE-2019-9011, CVE-2019-9013, CVE-2020-12067, CVE-2020-12069, CVE-2021-36764, CVE-2019-5105, CVE-2021-29241, CVE-2021-29242, CVE-2022-22519, CVE-2022-22517, CVE-2018-0739) (Product Group: Festo Firmware (R05 (17.06.2016) = 2.3.8.0) installed on Festo Hardware Controller CECC-D(All versions), Festo Firmware (R06 (11.10.2016) = 2.3.8.1) installed on Festo Hardware Controller CECC-LK(All versions), Festo Firmware (R05 (17.06.2016) = 2.3.8.0) installed on Festo Hardware Controller CECC-S(All versions)): No fix planned. This issue will be handled with next hardware generation release.
- MitigationFesto Firmware (R06 (11.10.2016) = 2.3.8.1) installed on Festo Hardware Controller CECC-LK (All versions)cisa_csaf_ot
(CVE-2020-12068, CVE-2022-22515, CVE-2022-22514, CVE-2022-22513, CVE-2021-36763, CVE-2021-33485, CVE-2020-10245, CVE-2020-15806, CVE-2019-9011, CVE-2019-9013, CVE-2020-12067, CVE-2020-12069, CVE-2021-36764, CVE-2019-5105, CVE-2021-29241, CVE-2021-29242, CVE-2022-22519, CVE-2022-22517, CVE-2018-0739) (Product Group: Festo Firmware (R05 (17.06.2016) = 2.3.8.0) installed on Festo Hardware Controller CECC-D(All versions), Festo Firmware (R06 (11.10.2016) = 2.3.8.1) installed on Festo Hardware Controller CECC-LK(All versions), Festo Firmware (R05 (17.06.2016) = 2.3.8.0) installed on Festo Hardware Controller CECC-S(All versions)): No fix planned. This issue will be handled with next hardware generation release.
- MitigationFesto Firmware (R06 (11.10.2016) = 2.3.8.1) installed on Festo Hardware Controller CECC-S (All versions)cisa_csaf_ot
(CVE-2020-12068, CVE-2022-22515, CVE-2022-22514, CVE-2022-22513, CVE-2021-36763, CVE-2021-33485, CVE-2020-10245, CVE-2020-15806, CVE-2019-9011, CVE-2019-9013, CVE-2020-12067, CVE-2020-12069, CVE-2021-36764, CVE-2019-5105, CVE-2021-29241, CVE-2021-29242, CVE-2022-22519, CVE-2022-22517, CVE-2018-0739) (Product Group: Festo Firmware (R05 (17.06.2016) = 2.3.8.0) installed on Festo Hardware Controller CECC-D(All versions), Festo Firmware (R06 (11.10.2016) = 2.3.8.1) installed on Festo Hardware Controller CECC-LK(All versions), Festo Firmware (R05 (17.06.2016) = 2.3.8.0) installed on Festo Hardware Controller CECC-S(All versions)): No fix planned. This issue will be handled with next hardware generation release.
- 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.
- No fix plannedfesto_psirt
For CVE-2019-5105, CVE-2019-9011, CVE-2019-9013, CVE-2020-10245, CVE-2020-12067, CVE-2020-12068, CVE-2020-12069, CVE-2020-15806, CVE-2021-29241, CVE-2021-29242, CVE-2021-33485, CVE-2021-36763, CVE-2021-36764, CVE-2022-22513, CVE-2022-22514, CVE-2022-22515, CVE-2022-22517, CVE-2022-22519: No fix planned. This issue will be handled with next hardware generation release.
- No fix plannedfesto_psirt
No fix planned. This issue will be handled with next hardware generation release.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (103)
Products and version ranges known to be affected.
- CODESYS Development System 3.5.21.20 external component of Festo Automation Suite 2.8.0.138all versionsfixedcisa_csaf_otUScpe:2.3:a:codesys:development_system:3.5.21.20*:*:*:*:*:*:*:*
- Festo Automation Suite <2.8.0.138 installed with CODESYS Development System 3.0all versionscisa_csaf_otUScpe:2.3:a:codesys:development_system:3.0:*:*:*:*:*:*:*
- Festo Automation Suite <2.8.0.138 installed with CODESYS Development System 3.5.16.10all versionscisa_csaf_otUScpe:2.3:a:codesys:development_system:3.5.16.10:*:*:*:*:*:*:*
- CODESYS Development System 3.5.21.20 external component of Festo Automation Suite 2.8.0.138all versionsfixedfesto_psirtDEcpe:2.3:a:codesys:development_system:3.5.21.20*:*:*:*:*:*:*:*
- Festo Automation Suite <2.8.0.138 installed with CODESYS Development System 3.0all versionsfesto_psirtDEcpe:2.3:a:codesys:development_system:3.0:*:*:*:*:*:*:*
- Festo Automation Suite <2.8.0.138 installed with CODESYS Development System 3.5.16.10all versionsfesto_psirtDEcpe:2.3:a:codesys:development_system:3.5.16.10:*:*:*:*:*:*:*
advisories (8)
Vendor and ecosystem advisories describing this.
- FSA-202202Festo: Controller CECC-S,LK,D family <= 2.3.8.1 - multiple vulnerabilities in CODESYS V3 runtime system2022-07-18csaf · festo_psirtDE
The Festo controller CECC product family is affected by multiple vulnerabilities in the CODESYS V3 runtime.
- FSA-202203Festo: Controller CECC-S,LK,D family firmware 2.4.2.0 - multiple vulnerabilities in CODESYS V3 runtime system2022-07-18csaf · festo_psirtDE
The Festo controller CECC product family in firmware version 2.4.2.0 is affected by multiple vulnerabilities in the CODESYS V3 runtime.
- 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-2021-054Pilz: Multiple vulnerabilities in CODESYS V2 and V3 runtime system2022-04-26csaf · pilz_psirtDE
Several Pilz products use Versions V2 and V3 of the CODESYS runtime system from CODESYS GmbH, which enables the execution of IEC 61131-3 PLC programs. These runtime environments contain several vulnerabilities, which an attacker can exploit via the network. Successful exploitation of the vulnerabilities results in reduced availability and, in a worst case, to the insertion of program code.
- VDE-2021-061Pilz: PMC programming tool 3.x.x affected by multiple vulnerabilities2022-04-26csaf · pilz_psirtDE
The software product PMC programming tool from Pilz is based on the software CODESYS Development System from CODESYS GmbH. This software is affected by several vulnerabilities, which an attacker can exploit locally or via the network. This means that, in a worst case, attackers could execute arbitrary program code on the PC on which the PMC programming tool is used.
- VDE-2022-031WAGO: Multiple Products Series affected by multiple CODESYS vulnerabilities2022-08-17csaf · wago_psirtDE
Multiple WAGO product families are prone to multiple vulnerabilities affecting CODESYS control runtime system.
- ICSA-25-273-04Festo Controller CECC-S,-LK,-D Family Firmware (Update A)2025-09-30icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow an attacker to crash services, escalate privileges, bypass authentication, or gain unauthorized access to sensitive systems and data.
- 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.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (14)
External citations — patches, advisories, analysis.
- https://cert.vde.com/en/advisories/VDE-2021-061/cnnvd
- https://cert.vde.com/en/advisories/VDE-2022-022/cnnvd
- https://cert.vde.com/en/advisories/VDE-2022-031/cnnvd
- https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=12943&token=d097958a67ba382de688916f77e3013c0802fade&download=cnnvd
- https://cxsecurity.com/cveshow/CVE-2020-12069/cnnvd
- https://www.pilz.com.cn/zh-CNPatchcnnvd
- https://cert.vde.com/en/advisories/VDE-2021-061/enisa_euvd
- https://cert.vde.com/en/advisories/VDE-2022-022/enisa_euvd
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