Summary
Successful exploitation of these vulnerabilities could risk privilege escalation, which could result in remote code execution.
The following versions of Schneider Electric Plant iT/Brewmaxx are affected:
- Plant iT/Brewmaxx 9.60_and_above (CVE-2025-49844, CVE-2025-46817, CVE-2025-46818, CVE-2025-46819)
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 9.9 | Schneider Electric | Schneider Electric Plant iT/Brewmaxx | Use After Free, Integer Overflow or Wraparound, Improper Control of Generation of Code (‘Code Injection’) |
Background
- Critical Infrastructure Sectors: Energy, Critical Manufacturing, Commercial Facilities
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: France
Vulnerabilities
CVE-2025-49844
The affected product uses Redis, an open-source, in-memory database. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.
Affected Products
Schneider Electric Plant iT/Brewmaxx
Vendor:
Schneider Electric
Product Version:
Schneider Electric Plant iT/Brewmaxx: 9.60_and_above
Product Status:
known_affected
Remediations
Mitigation
Schneider Electric recommends users immediately apply the following mitigations to reduce the risk of exploit:
Mitigation
Install Patch ProLeiT-2025-001 via ProLeiT Support
https://www.proleit.com/support/
Mitigation
After installing ProLeiT-2025-001, disable the eval commands in Redis on the application server, VisuHub, engineering workstations, and workstations with emergency mode functionality
Mitigation
Force usage of secure Redis configuration templates in system settings as documented in the patch manual
Mitigation
Restart all patched servers and workstations
Mitigation
Schneider Electric strongly recommends the following industry cybersecurity best practices.
Mitigation
Locate control and safety system networks and remote devices behind firewalls and isolate them from the business network.
Mitigation
Install physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.
Mitigation
Place all controllers in locked cabinets and never leave them in the “Program” mode.
Mitigation
Never connect programming software to any network other than the network intended for that device.
Mitigation
Scan all methods of mobile data exchange with the isolated network such as CDs, USB drives, etc. before use in the terminals or any node connected to these networks.
Mitigation
Never allow mobile devices that have connected to any other network besides the intended network to connect to the safety or control networks without proper sanitation.
Mitigation
Minimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.
Mitigation
When remote access is required, use secure methods, such as virtual private networks (VPNs). Recognize that VPNs may have vulnerabilities and should be updated to the most current version available. Also, understand that VPNs are only as secure as the connected devices.
Mitigation
For more information refer to the Schneider Electric Recommended Cybersecurity Best Practices document.
https://www.se.com/us/en/download/document/7EN52-0390/
Vendor fix
For more information, see Schneider Electric security notification “SEVD-2026-013-01 Multiple Third-Party Vulnerabilities on ProLeiT Plant iT/Brewmaxx”
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2026-013-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2026-013-01.pdf
Relevant CWE: CWE-416 Use After Free
Metrics
CVE-2025-46817
The affected product uses Redis, an open-source, in-memory database. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution
Affected Products
Schneider Electric Plant iT/Brewmaxx
Vendor:
Schneider Electric
Product Version:
Schneider Electric Plant iT/Brewmaxx: 9.60_and_above
Product Status:
known_affected
Remediations
Mitigation
Schneider Electric recommends users immediately apply the following mitigations to reduce the risk of exploit:
Mitigation
Install Patch ProLeiT-2025-001 via ProLeiT Support
https://www.proleit.com/support/
Mitigation
After installing ProLeiT-2025-001, disable the eval commands in Redis on the application server, VisuHub, engineering workstations, and workstations with emergency mode functionality
Mitigation
Force usage of secure Redis configuration templates in system settings as documented in the patch manual
Mitigation
Restart all patched servers and workstations
Mitigation
Schneider Electric strongly recommends the following industry cybersecurity best practices.
Mitigation
Locate control and safety system networks and remote devices behind firewalls and isolate them from the business network.
Mitigation
Install physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.
Mitigation
Place all controllers in locked cabinets and never leave them in the “Program” mode.
Mitigation
Never connect programming software to any network other than the network intended for that device.
Mitigation
Scan all methods of mobile data exchange with the isolated network such as CDs, USB drives, etc. before use in the terminals or any node connected to these networks.
Mitigation
Never allow mobile devices that have connected to any other network besides the intended network to connect to the safety or control networks without proper sanitation.
Mitigation
Minimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.
Mitigation
When remote access is required, use secure methods, such as virtual private networks (VPNs). Recognize that VPNs may have vulnerabilities and should be updated to the most current version available. Also, understand that VPNs are only as secure as the connected devices.
Mitigation
For more information refer to the Schneider Electric Recommended Cybersecurity Best Practices document.
https://www.se.com/us/en/download/document/7EN52-0390/
Vendor fix
For more information, see Schneider Electric security notification “SEVD-2026-013-01 Multiple Third-Party Vulnerabilities on ProLeiT Plant iT/Brewmaxx”
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2026-013-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2026-013-01.pdf
Relevant CWE: CWE-190 Integer Overflow or Wraparound
Metrics
CVE-2025-46818
The affected product uses Redis, an open-source, in-memory database. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.
Affected Products
Schneider Electric Plant iT/Brewmaxx
Vendor:
Schneider Electric
Product Version:
Schneider Electric Plant iT/Brewmaxx: 9.60_and_above
Product Status:
known_affected
Remediations
Mitigation
Schneider Electric recommends users immediately apply the following mitigations to reduce the risk of exploit:
Mitigation
Install Patch ProLeiT-2025-001 via ProLeiT Support
https://www.proleit.com/support/
Mitigation
After installing ProLeiT-2025-001, disable the eval commands in Redis on the application server, VisuHub, engineering workstations, and workstations with emergency mode functionality
Mitigation
Force usage of secure Redis configuration templates in system settings as documented in the patch manual
Mitigation
Restart all patched servers and workstations
Mitigation
Schneider Electric strongly recommends the following industry cybersecurity best practices.
Mitigation
Locate control and safety system networks and remote devices behind firewalls and isolate them from the business network.
Mitigation
Install physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.
Mitigation
Place all controllers in locked cabinets and never leave them in the “Program” mode.
Mitigation
Never connect programming software to any network other than the network intended for that device.
Mitigation
Scan all methods of mobile data exchange with the isolated network such as CDs, USB drives, etc. before use in the terminals or any node connected to these networks.
Mitigation
Never allow mobile devices that have connected to any other network besides the intended network to connect to the safety or control networks without proper sanitation.
Mitigation
Minimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.
Mitigation
When remote access is required, use secure methods, such as virtual private networks (VPNs). Recognize that VPNs may have vulnerabilities and should be updated to the most current version available. Also, understand that VPNs are only as secure as the connected devices.
Mitigation
For more information refer to the Schneider Electric Recommended Cybersecurity Best Practices document.
https://www.se.com/us/en/download/document/7EN52-0390/
Vendor fix
For more information, see Schneider Electric security notification “SEVD-2026-013-01 Multiple Third-Party Vulnerabilities on ProLeiT Plant iT/Brewmaxx”
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2026-013-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2026-013-01.pdf
Relevant CWE: CWE-94 Improper Control of Generation of Code (‘Code Injection’)
Metrics
CVE-2025-46819
The affected product uses Redis, an open-source, in-memory database. Versions 8.2.1 and below allow an authenticated user to use a specially crafted LUA script to read out-of-bound data or crash the server and subsequent denial of service.
Affected Products
Schneider Electric Plant iT/Brewmaxx
Vendor:
Schneider Electric
Product Version:
Schneider Electric Plant iT/Brewmaxx: 9.60_and_above
Product Status:
known_affected
Remediations
Mitigation
Schneider Electric recommends users immediately apply the following mitigations to reduce the risk of exploit:
Mitigation
Install Patch ProLeiT-2025-001 via ProLeiT Support
https://www.proleit.com/support/
Mitigation
After installing ProLeiT-2025-001, disable the eval commands in Redis on the application server, VisuHub, engineering workstations, and workstations with emergency mode functionality
Mitigation
Force usage of secure Redis configuration templates in system settings as documented in the patch manual
Mitigation
Restart all patched servers and workstations
Mitigation
Schneider Electric strongly recommends the following industry cybersecurity best practices.
Mitigation
Locate control and safety system networks and remote devices behind firewalls and isolate them from the business network.
Mitigation
Install physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.
Mitigation
Place all controllers in locked cabinets and never leave them in the “Program” mode.
Mitigation
Never connect programming software to any network other than the network intended for that device.
Mitigation
Scan all methods of mobile data exchange with the isolated network such as CDs, USB drives, etc. before use in the terminals or any node connected to these networks.
Mitigation
Never allow mobile devices that have connected to any other network besides the intended network to connect to the safety or control networks without proper sanitation.
Mitigation
Minimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.
Mitigation
When remote access is required, use secure methods, such as virtual private networks (VPNs). Recognize that VPNs may have vulnerabilities and should be updated to the most current version available. Also, understand that VPNs are only as secure as the connected devices.
Mitigation
For more information refer to the Schneider Electric Recommended Cybersecurity Best Practices document.
https://www.se.com/us/en/download/document/7EN52-0390/
Vendor fix
For more information, see Schneider Electric security notification “SEVD-2026-013-01 Multiple Third-Party Vulnerabilities on ProLeiT Plant iT/Brewmaxx”
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2026-013-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2026-013-01.pdf
Relevant CWE: CWE-190 Integer Overflow or Wraparound
Metrics
Acknowledgments
- Schneider Electric reported these vulnerabilities to CISA
Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities.
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the Internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
Revision History
- Initial Release Date: 2026-03-24
| Date | Revision | Summary |
|---|---|---|
| 2026-03-24 | 1 | Initial Republication of SEVD-2026-013-01 |
