Original Article Summary

View CSAF Summary Siemens Reyrolle 7SR5 Before V2.70 is affected by multiple vulnerabilities. Siemens has released a new version for Reyrolle 7SR5 and recommends to update to the latest version. The following versions of Siemens Reyrolle 7SR5 are affected: Reyrolle 7SR5 vers:intdot/<2.70 (CVE-2024-42384, CVE-2024-42385, CVE-2024-42386, CVE-2024-42391, CVE-2024-42392, CVE-2026-62645, CVE-2026-62646, CVE-2026-62647, CVE-2026-62648, CVE-2026-62649, CVE-2026-62650, CVE-2026-62652, CVE-2026-62653, CVE-2026-62654) CVSS Vendor Equipment Vulnerabilities v3 9.8 Siemens Siemens Reyrolle 7SR5 Integer Overflow or Wraparound, Improper Neutralization of Delimiters, Use of Out-of-range Pointer Offset, Missing Authentication for Critical Function, Insufficient Entropy, Improper Input Validation, Out-of-bounds Write, Allocation of Resources Without Limits or Throttling, Authentication Bypass Using an Alternate Path or Channel, Insertion of Sensitive Information Into Debugging Code, Download of Code Without Integrity Check Background Critical Infrastructure Sectors: Energy Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities Expand All + CVE-2024-42384 Integer Overflow or Wraparound vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and produce a segmentation fault on the application. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-190 Integer Overflow or Wraparound Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2024-42385 Improper Neutralization of Delimiters vulnerability in Cesanta Mongoose Web Server v7.14 allows to trigger an out-of-bound memory write if the PEM certificate contains unexpected characters. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-140 Improper Neutralization of Delimiters Metrics CVSS Version Base Score Base Severity Vector String 3.1 4 MEDIUM CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H CVE-2024-42386 Use of Out-of-range Pointer Offset vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and produce a segmentation fault on the application. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-823 Use of Out-of-range Pointer Offset Metrics CVSS Version Base Score Base Severity Vector String 3.1 8.2 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVE-2024-42391 Use of Out-of-range Pointer Offset vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and force the application to read unintended heap memory space. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-823 Use of Out-of-range Pointer Offset Metrics CVSS Version Base Score Base Severity Vector String 3.1 4.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N CVE-2024-42392 Improper Neutralization of Delimiters vulnerability in Cesanta Mongoose Web Server v7.14 allows to trigger an infinite loop bug if the input string contains unexpected characters. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-140 Improper Neutralization of Delimiters Metrics CVSS Version Base Score Base Severity Vector String 3.1 4 MEDIUM CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H CVE-2026-62645 Information is exposed through the web interface that can be used to calculate the current and past session ID numbers. This could allow an attacker to bypass the authentication and gain unauthorized access to the device. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-306 Missing Authentication for Critical Function Metrics CVSS Version Base Score Base Severity Vector String 3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-62646 A session identifier is generated using an algorithm with insufficient randomness, resulting in a token with low entropy that can be predicted or brute-forced within a feasible number of attempts. This could allow an unauthenticated remote attacker to derive valid session identifiers and bypass authentication. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-331 Insufficient Entropy Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.4 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVE-2026-62647 A random number generator is used to generate security-relevant values (such as session identifiers used for authentication purposes) that is not initialized with a True Random Number Generator (TRNG), resulting in a predictable sequence of generated values. This could allow an unauthenticated remote attacker to more easily predict the generated values and impersonate a legitimate authenticated user, potentially gaining unauthorized access to the device. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-20 Improper Input Validation Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.4 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVE-2026-62648 The length of the URL component contained in pre-authenticated HTTP messages is not properly validated before appending additional data to it, resulting in an out-of-bounds write condition in memory. This could allow an unauthenticated remote attacker to crash the affected device, causing a reboot and resulting in a denial-of-service condition. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-787 Out-of-bounds Write Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-62649 The web server does not properly limit or manage system resources when processing a high volume of concurrent HTTP requests. This could allow an unauthenticated remote attacker to cause the entire device to crash and reboot, resulting in a denial-of-service condition. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-770 Allocation of Resources Without Limits or Throttling Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-62650 Server-side authorization checks in the web-based management interface are not properly enforced, allowing role-based access control (RBAC) restrictions to be bypassed through manipulation of request data. This could allow an authenticated, low-privileged remote attacker to escalate privileges to an administrative level. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-288 Authentication Bypass Using an Alternate Path or Channel Metrics CVSS Version Base Score Base Severity Vector String 3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-62652 The device firmware contains binaries from which debugging symbols have not been removed. This could allow an unauthenticated attacker with access to the publicly available firmware update files to more easily reverse engineer the device's firmware, facilitating the identification of further vulnerabilities. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-215 Insertion of Sensitive Information Into Debugging Code Metrics CVSS Version Base Score Base Severity Vector String 3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVE-2026-62653 The input received over a proprietary communication protocol that is exposed when the device is placed into a special firmware-update mode is not properly validated, resulting in a memory corruption condition. This could allow an unauthenticated attacker with physical access to the device to cause a crash and potentially execute arbitrary code on the device. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-787 Out-of-bounds Write Metrics CVSS Version Base Score Base Severity Vector String 3.1 6.8 MEDIUM CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-62654 A special maintenance mode can be activated via a physical key sequence during device boot, in which the device downloads and executes program code from a network server without verifying its authenticity or integrity. This could allow an attacker with physical access to the device to upload and execute arbitrary, unsigned code. View CVE Details Affected Products Siemens Reyrolle 7SR5 Vendor: Siemens Product Version: Reyrolle 7SR5 < V2.70 Product Status: known_affected Remediations Vendor fix Update to V2.70 or later version https://support.industry.siemens.com/cs/ww/en/view/109772413/ Relevant CWE: CWE-494 Download of Code Without Integrity Check Metrics CVSS Version Base Score Base Severity Vector String 3.1 6.8 MEDIUM CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Acknowledgments Siemens ProductCERT reported these vulnerabilities to CISA. General Recommendations Operators of critical power systems (e.g. TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid's reliability can thus be minimized by virtue of the grid design. Siemens strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment. As a general security measure Siemens strongly recommends protecting network access with appropriate mechanisms (e.g. firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines in order to run the devices in a protected IT environment. Recommended security guidelines can be found at: https://www.siemens.com/gridsecurity Additional Resources For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories 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-142885 in HTML and CSAF. Terms of Use The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use. 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 exploitation risk of this vulnerability. Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolate 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 recent version available. Also recognize VPN is only as secure as its 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. Advisory Conversion Disclaimer This ICSA is a verbatim republication of Siemens ProductCERT SSA-142885 from a direct conversion of the vendor's Common Security Advisory Framework (CSAF) advisory. This is republished to CISA's website as a means of increasing visibility and is provided "as-is" for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact Siemens ProductCERT directly for any questions regarding this advisory. Revision History Initial Release Date: 2026-09-08 Date Revision Summary 2026-09-08 1 Publication Date 2026-09-15 2 Initial CISA Republication of Siemens ProductCERT SSA-142885 advisory Legal Notice and Terms of Use