Siemens Industrial Edge App Publisher

View CSAF Summary The Industrial Edge App Publisher contains a vulnerability chain involving improper certificate validation and the rendering of unescaped data from backend responses. These issues can be combined to allow an attacker on the network to impersonate the management server and execute arbitrary code (RCE) on the local machine through Node.js integration. Siemens has released an update for the Industrial Edge App Publisher and recommends to update to the latest version. The following versions of Siemens Industrial Edge App Publisher are affected: Industrial Edge App Publisher vers:intdot/<1.27.9 (CVE-2026-78556, CVE-2026-78557) CVSS Vendor Equipment v3 8.3 Siemens Industrial Edge App Publisher 2 Vulnerabilities Improper Certificate Validation, Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Background Critical Infrastructure Sectors: Critical Manufacturing, Transportation Systems, Energy, Healthcare and Public Health, Financial Services, Government Services and Facilities Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities Expand All + CVE-2026-78556 The affected software does not properly validate the server certificate when initiating a TLS connection. This allows an attacker to intercept and relay communication (Man-in-the-Middle attack) and to spoof a trusted entity by interfering in the communication path between the client and the intended server. Read More 1 Affected Product Industrial Edge App Publisher < V1.27.9 Product Status: known_affected Remediations Vendor fix Update to V1.27.9 or later version Additional Metrics Relevant CWE: CWE-295 Improper Certificate Validation 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 View CVE Details CVE-2026-78557 The application fails to properly sanitize or escape data received from the backend before rendering it in the user interface. Because the front end is integrated with Node.js, this vulnerability allows for the execution of arbitrary JavaScript, which can be leveraged to achieve remote code execution (RCE) on the victim's machine Read More 2 Affected Products Industrial Edge App Publisher < V1.27.9 Product Status: known_affected Remediations Vendor fix Update to V1.27.9 or later version Industrial Edge App Publisher < V1.27.9 Product Status: known_affected Remediations Vendor fix Update to V1.27.9 or later version Additional Metrics Relevant CWE: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CVSS Version Base Score Base Severity Vector String 3.1 8.3 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H View CVE Details Acknowledgments Siemens ProductCERT reported these vulnerabilities to CISA. General Recommendations As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity Additional Resources For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories 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. 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 network