Schneider Electric EcoStruxure Power Build Rapsody

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1. EXECUTIVE SUMMARY

  • CVSS v4 4.6
  • ATTENTION: Low attack complexity
  • Vendor: Schneider Electric
  • Equipment: EcoStruxure Power Build Rapsody
  • Vulnerability: Stack-based Buffer Overflow

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to achieve arbitrary code execution on the affected device.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Schneider Electric product is affected:

  • EcoStruxure Power Build Rapsody: v2.7.12 FR and prior

3.2 VULNERABILITY OVERVIEW

3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121

Stack-based Buffer Overflow vulnerability exists that could cause local attackers being able to exploit these issues to potentially execute arbitrary code while the end user opens a malicious project file (SSD file) provided by the attacker.

CVE-2025-3916 has been assigned to this vulnerability. A CVSS v3.1 base score of 5.3 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L).

A CVSS v4 score has also been calculated for CVE-2025-3916. A base score of 4.6 has been calculated; the CVSS vector string is (AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Energy
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: France

3.4 RESEARCHER

Michael Heinzl reported this vulnerability to Schneider Electric.
Schneider Electric reported this vulnerability to CISA.

4. MITIGATIONS

Schneider Electric recommends users take the following actions:

  • Update to Version v2.8.1 FR of EcoStruxure Power Build-Rapsody, which includes a fix for this vulnerability. Reboot after installing the new version.

Additionally, Schneider Electric recommends that if users choose not to apply the remediation provided above, the following mitigations should be applied immediately to reduce the risk of exploitation:

  • Store the project files in a secure storage and restrict access to only trusted users.
  • When exchanging files over the network, use secure communication protocols.
  • Encrypt project files when stored.
  • Only open project files received from trusted sources.
  • Compute a hash of the project files and regularly check the consistency of this hash to verify the integrity before usage.
  • Harden the workstation running EcoStruxure™ Power Build Rapsody.
  • To ensure you are informed of all updates, including details on affected products and remediation plans, subscribe to Schneider Electric’s security notification service here: https://www.se.com/en/work/support/cybersecurity/security-notifications.jsp

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

  • 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:

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.

5. UPDATE HISTORY

  • June 3, 2025: Initial Republication of Schneider Electric SEVD-2025-133-03

Instantel Micromate

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1. EXECUTIVE SUMMARY

  • CVSS v4 9.3
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Instantel
  • Equipment: Micromate
  • Vulnerability: Missing Authentication for Critical Function

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an unauthenticated attacker to access the device’s configuration port and execute commands.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Micromate are affected:

  • Micromate: All versions

3.2 VULNERABILITY OVERVIEW

3.2.1 MISSING AUTHENTICATION FOR CRITICAL FUNCTION CWE-306

Instantel Micromate lacks authentication on a configuration port which could allow an attacker to execute commands if connected.

CVE-2025-1907 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2025-1907. A base score of 9.3 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Canada

3.4 RESEARCHER

Souvik Kandar of MicroSec (microsec.io) reported this vulnerability to CISA.

4. MITIGATIONS

Instantel is actively working on a firmware update to address this vulnerability. In the meantime, Micromate users are advised to implement the following workaround measures:

  • Establish and maintain a list of approved IP addresses that are allowed to access the modem. This measure will help prevent unauthorized access.

For more information, please contact Instantel technical support.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

  • 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.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

  • May 29, 2025: Initial Publication

Consilium Safety CS5000 Fire Panel

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1. EXECUTIVE SUMMARY

  • CVSS v4 9.3
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Consilium Safety
  • Equipment: CS5000 Fire Panel
  • Vulnerabilities: Initialization of a Resource with an Insecure Default, Use of Hard-coded Credentials

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to gain high-level access to and remotely operate the device, potentially putting it into a non-functional state.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Consilium Safety product is affected:

  • CS5000 Fire Panel: All versions

3.2 VULNERABILITY OVERVIEW

3.2.1 INITIALIZATION OF A RESOURCE WITH AN INSECURE DEFAULT CWE-1188

The CS5000 Fire Panel is vulnerable due to a default account that exists on the panel. Even though it is possible to change this by SSHing into the device, it has remained unchanged on every installed system observed. This account is not root but holds high-level permissions that could severely impact the device’s operation if exploited.

CVE-2025-41438 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2025-41438. A base score of 9.3 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.2.2 USE OF HARD-CODED CREDENTIALS CWE-798

The CS5000 Fire Panel is vulnerable due to a hard-coded password that runs on a VNC server and is visible as a string in the binary responsible for running VNC. This password cannot be altered, allowing anyone with knowledge of it to gain remote access to the panel. Such access could enable an attacker to operate the panel remotely, potentially putting the fire panel into a non-functional state and causing serious safety issues.

CVE-2025-46352 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2025-46352. A base score of 9.3 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Energy, Government Services and Facilities, Healthcare and Public Health, Transportation Systems
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Sweden

3.4 RESEARCHER

Andrew Tierney of Pen Test Partners reported these vulnerabilities to CISA.

4. MITIGATIONS

Consilium Safety is aware of these vulnerabilities. Currently, no fixes are planned for the CS5000 Fire Panel.

Users wanting enhanced security features are advised to upgrade to Consilium Safety’s newer line of fire panels. Specifically, products manufactured after July 1, 2024, incorporate more secure-by-design principles.

Users of the CS5000 Fire Panel are recommended to implement compensating countermeasures, such as physical security and access control restrictions for dedicated personnel.

More product safety information can be found on Consilium Safety’s support webpage.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

  • 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.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.

5. UPDATE HISTORY

  • May 29, 2025: Initial Publication

Siemens SiPass Integrated

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

View CSAF

1. EXECUTIVE SUMMARY

  • CVSS v4 8.7
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Siemens
  • Equipment: SiPass integrated
  • Vulnerability: Out-of-bounds Read

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to cause a denial-of-service condition.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Siemens reports that the following products are affected:

  • SiPass integrated: Versions prior to V2.95.3.18

3.2 VULNERABILITY OVERVIEW

3.2.1 OUT-OF-BOUNDS READ CWE-125

Affected server applications contain an out of bounds read past the end of an allocated buffer while checking the integrity of incoming packets. This could allow an unauthenticated remote attacker to create a denial of service condition.

CVE-2022-31812 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.5 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

A CVSS v4 score has also been calculated for CVE-2022-31812. A base score of 8.7 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Airbus Security reported this vulnerability to Siemens.
Siemens reported this vulnerability to CISA.

4. MITIGATIONS

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

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-041082 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

  • 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). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are 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. 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 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:

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

  • May 29, 2025: Initial Republication of Siemens Security Advisory SSA-041082

Lantronix Device Installer

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1. EXECUTIVE SUMMARY

  • CVSS v4 6.9
  • ATTENTION: Low attack complexity
  • Vendor: Lantronix
  • Equipment: Device Installer
  • Vulnerability: Improper Restriction of XML External Entity Reference

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to gain access to the host machine running the Device Installer software.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Lantronix products are affected:

  • Device Installer: Versions 4.4.0.7 and prior

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER RESTRICTION OF XML EXTERNAL ENTITY REFERENCE CWE-611

Lantronix Device installer is vulnerable to XML External Entity (XXE) attacks in configuration files read from the network device. An attacker could obtain credentials, access these network devices, and modify their configurations. An attacker may also gain access to the host running the Device Installer software or the password hash of the user running the application.

CVE-2025-4338 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.8 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L).

A CVSS v4 score has also been calculated for CVE-2025-4338. A base score of 6.9 has been calculated; the CVSS vector string is (AV:A/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Information Technology
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Robert McLellan reported this vulnerability to CISA.

4. MITIGATIONS

Lantronix indicates its Device Installer product has reached its end of support lifecycle in 2018. It will not receive any additional updates or security enhancements. For your security, Lantronix advises migrating to a supported solution Lantronix Provisioning Manager as soon as possible. Using unsupported software is at user’s own discretion and may leave user systems vulnerable to security issues.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability such as:

  • 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:

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.

5. UPDATE HISTORY

  • May 22, 2025: Initial Publication

Danfoss AK-SM 8xxA Series

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1. EXECUTIVE SUMMARY

  • CVSS v4 7.3
  • ATTENTION: Exploitable remotely
  • Vendor: Danfoss
  • Equipment: AK-SM 8xxA Series
  • Vulnerability: Improper Authentication

2. RISK EVALUATION

Successful exploitation of this vulnerability could enable a remote attacker to bypass authentication and execute arbitrary code remotely.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of AK-SM 800A system manager are affected:

  • AK-SM 8xxA Series: Versions prior to R4.2

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER AUTHENTICATION CWE-287

An unauthorized access vulnerability, caused by datetime-based password generation, could potentially result in an authentication bypass.

CVE-2025-41450 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.2 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:H).

A CVSS v4 score has also been calculated for CVE-2025-41450. A base score of 7.3 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:L/VA:H/SC:H/SI:L/SA:H).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Denmark

3.4 RESEARCHER

Tomer Goldschmidt of Claroty Team82 reported this vulnerability to CISA.

4. MITIGATIONS

Danfoss has created release R4.2 to address this vulnerability. Users can obtain and install the latest version by following the AK-SM 800A Software Upgrade Process.

For more information, please see the Danfoss security advisory.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

  • 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:

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability has a high attack complexity.

5. UPDATE HISTORY

  • May 20, 2025: Initial Publication

Vertiv Liebert RDU101 and UNITY

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1. EXECUTIVE SUMMARY

  • CVSS v4 9.3
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Vertiv
  • Equipment: Liebert RDU101 and Liebert UNITY
  • Vulnerabilities: Authentication Bypass Using an Alternate Path or Channel, Stack-based Buffer Overflow

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to cause a denial-of-service condition or achieve remote code execution

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Vertiv products are affected:

  • Liebert RDU101: Versions 1.9.0.0 and prior
  • Liebert IS-UNITY: Versions 8.4.1.0 and prior

3.2 VULNERABILITY OVERVIEW

3.2.1 AUTHENTICATION BYPASS USING AN ALTERNATE PATH OR CHANNEL CWE-288

Affected Vertiv products do not properly protect webserver functions that could allow an attacker to bypass authentication.

CVE-2025-46412 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2025-46412. A base score of 9.3 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.2.2 STACK-BASED BUFFER OVERFLOW CWE-121

Affected Vertiv products contain a stack based buffer overflow vulnerability. An attacker could exploit this vulnerability to gain code execution on the device.

CVE-2025-41426 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2025-41426. A base score of 9.3 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Communications, Energy
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Vera Mens of Claroty Team82 reported this these vulnerabilities to CISA.

4. MITIGATIONS

Vertiv recommends users take the following actions:

  • Update Liebert RDU101 to v1.9.1.2_0000001
  • Update IS-UNITY to v8.4.3.1_00160

For more information please contact Vertiv.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

  • 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.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.

5. UPDATE HISTORY

  • May 20, 2025: Initial Publication.

Threat Actors Target U.S. Critical Infrastructure with LummaC2 Malware

Today, CISA and the Federal Bureau of Investigation released a joint Cybersecurity Advisory, LummaC2 Malware Targeting U.S. Critical Infrastructure Sectors.

This advisory details the tactics, techniques, and procedures, and indicators of compromise (IOCs) linked to threat actors deploying LummaC2 malware. This malware poses a serious threat, capable of infiltrating networks and exfiltrating sensitive information, to vulnerable individuals’ and organizations’ computer networks across U.S. critical infrastructure sectors.

As recently as May 2025, threat actors have been observed using LummaC2 malware, underscoring the ongoing threat. The advisory includes IOCs tied to infections from November 2023 through May 2025. Organizations are strongly urged to review the advisory and implement the recommended mitigations to reduce exposure and impact.

Russian GRU Cyber Actors Targeting Western Logistics Entities and Tech Companies

Today, CISA, the National Security Agency, the Federal Bureau of Investigation, and other U.S. and international partners released a joint Cybersecurity Advisory, Russian GRU Targeting Western Logistics Entities and Technology Companies.  

This advisory details a Russian state-sponsored cyber espionage-oriented campaign targeting technology companies and logistics entities, including those involved in the coordination, transport, and delivery of foreign assistance to Ukraine.

Russian General Staff Main Intelligence Directorate (GRU) 85th Main Special Service Center, military unit 26165 cyber actors are using a mix of previously disclosed tactics, techniques, and procedures (TTPs) and are likely connected to these actors’ widescale targeting of IP cameras in Ukraine and bordering NATO nations.

Executives and network defenders at logistics entities and technology companies should recognize the elevated threat of until 26165 targeting, increase monitoring and threat hunting for known TTPs and indicators of compromise, and posture network defenses with a presumption of targeting. For more information on Russian state-sponsored threat actor activity, see CISA’s Russia Cyber Threat Overview and Advisories page.