Schneider Electric Plant iT/Brewmaxx

View CSAF
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

Expand All +

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.
View CVE Details

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
MitigationSchneider Electric recommends users immediately apply the following mitigations to reduce the risk of exploit:
MitigationInstall Patch ProLeiT-2025-001 via ProLeiT Supporthttps://www.proleit.com/support/
MitigationAfter installing ProLeiT-2025-001, disable the eval commands in Redis on the application server, VisuHub, engineering workstations, and workstations with emergency mode functionality
MitigationForce usage of secure Redis configuration templates in system settings as documented in the patch manual
MitigationRestart all patched servers and workstations
MitigationSchneider Electric strongly recommends the following industry cybersecurity best practices.
MitigationLocate control and safety system networks and remote devices behind firewalls and isolate them from the business network.
MitigationInstall physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.
MitigationPlace all controllers in locked cabinets and never leave them in the "Program" mode.
MitigationNever connect programming software to any network other than the network intended for that device.
MitigationScan 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.
MitigationNever 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.
MitigationMinimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.
MitigationWhen 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.
MitigationFor more information refer to the Schneider Electric Recommended Cybersecurity Best Practices document.https://www.se.com/us/en/download/document/7EN52-0390/
Vendor fixFor 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




CVSS Version
Base Score
Base Severity
Vector String




3.1
9.9
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H







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
View CVE Details

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
MitigationSchneider Electric recommends users immediately apply the following mitigations to reduce the risk of exploit:
MitigationInstall Patch ProLeiT-2025-001 via ProLeiT Supporthttps://www.proleit.com/support/
MitigationAfter installing ProLeiT-2025-001, disable the eval commands in Redis on the application server, VisuHub, engineering workstations, and workstations with emergency mode functionality
MitigationForce usage of secure Redis configuration templates in system settings as documented in the patch manual
MitigationRestart all patched servers and workstations
MitigationSchneider Electric strongly recommends the following industry cybersecurity best practices.
MitigationLocate control and safety system networks and remote devices behind firewalls and isolate them from the business network.
MitigationInstall physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.
MitigationPlace all controllers in locked cabinets and never leave them in the "Program" mode.
MitigationNever connect programming software to any network other than the network intended for that device.
MitigationScan 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.
MitigationNever 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.
MitigationMinimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.
MitigationWhen 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.
MitigationFor more information refer to the Schneider Electric Recommended Cybersecurity Best Practices document.https://www.se.com/us/en/download/document/7EN52-0390/
Vendor fixFor 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




CVSS Version
Base Score
Base Severity
Vector String




3.1
7
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H







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.
View CVE Details

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
MitigationSchneider Electric recommends users immediately apply the following mitigations to reduce the risk of exploit:
MitigationInstall Patch ProLeiT-2025-001 via ProLeiT Supporthttps://www.proleit.com/support/
MitigationAfter installing ProLeiT-2025-001, disable the eval commands in Redis on the application server, VisuHub, engineering workstations, and workstations with emergency mode functionality
MitigationForce usage of secure Redis configuration templates in system settings as documented in the patch manual
MitigationRestart all patched servers and workstations
MitigationSchneider Electric strongly recommends the following industry cybersecurity best practices.
MitigationLocate control and safety system networks and remote devices behind firewalls and isolate them from the business network.
MitigationInstall physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.
MitigationPlace all controllers in locked cabinets and never leave them in the "Program" mode.
MitigationNever connect programming software to any network other than the network intended for that device.
MitigationScan 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.
MitigationNever 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.
MitigationMinimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.
MitigationWhen 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.
MitigationFor more information refer to the Schneider Electric Recommended Cybersecurity Best Practices document.https://www.se.com/us/en/download/document/7EN52-0390/
Vendor fixFor 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




CVSS Version
Base Score
Base Severity
Vector String




3.1
6
MEDIUM
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N







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.
View CVE Details

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
MitigationSchneider Electric recommends users immediately apply the following mitigations to reduce the risk of exploit:
MitigationInstall Patch ProLeiT-2025-001 via ProLeiT Supporthttps://www.proleit.com/support/
MitigationAfter installing ProLeiT-2025-001, disable the eval commands in Redis on the application server, VisuHub, engineering workstations, and workstations with emergency mode functionality
MitigationForce usage of secure Redis configuration templates in system settings as documented in the patch manual
MitigationRestart all patched servers and workstations
MitigationSchneider Electric strongly recommends the following industry cybersecurity best practices.
MitigationLocate control and safety system networks and remote devices behind firewalls and isolate them from the business network.
MitigationInstall physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.
MitigationPlace all controllers in locked cabinets and never leave them in the "Program" mode.
MitigationNever connect programming software to any network other than the network intended for that device.
MitigationScan 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.
MitigationNever 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.
MitigationMinimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.
MitigationWhen 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.
MitigationFor more information refer to the Schneider Electric Recommended Cybersecurity Best Practices document.https://www.se.com/us/en/download/document/7EN52-0390/
Vendor fixFor 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




CVSS Version
Base Score
Base Severity
Vector String




3.1
6.3
MEDIUM
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H








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




Legal Notice and Terms of Use

https://www.cisa.gov/news-events/ics-advisories/icsa-26-083-03

2026-03-24 12:00 UTC
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