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 8.6 ATTENTION: Low attack complexity Vendor: Siemens Equipment: SiPass integrated Vulnerabilities: Improper Restriction of Operations within the Bounds of a Memory Buffer, Cross-site Scripting, Authorization Bypass Through User-Controlled Key, Storing Passwords in a Recoverable Format
2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an unauthenticated remote attacker to gain unauthorized access to user accounts, manipulate data, impersonate users, or execute arbitrary code on the SiPass integrated server.
3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Siemens reports that the following products are affected: SiPass integrated: Versions prior to V3.0 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER CWE-119 A heap-based buffer overflow vulnerability exists in the pictwread functionality of Accusoft ImageGear 20.1. A specially crafted, malformed file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability. CVE-2023-35002 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). A CVSS v4 score has also been calculated for CVE-2023-35002. A base score of 8.6 has been calculated; the CVSS vector string is (CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N). 3.2.2 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION (‘CROSS-SITE SCRIPTING’) CWE-79 Affected server applications are vulnerable to stored cross-site scripting (XSS), which allows an attacker to inject malicious code that can be executed by other users when they visit the affected page. Successful exploitation enables an attacker to impersonate other users within the application and steal their session data. This could enable unauthorized access to accounts and potentially lead to privilege escalation. CVE-2025-40772 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.4 has been calculated; the CVSS vector string is (CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H). A CVSS v4 score has also been calculated for CVE-2025-40772. A base score of 7.0 has been calculated; the CVSS vector string is (CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N). 3.2.3 AUTHORIZATION BYPASS THROUGH USER-CONTROLLED KEY CWE-639 Affected server applications contain a broken access control vulnerability. The authorization mechanisms lack sufficient server-side checks, which allows an attacker to execute specific API requests. Successful exploitation may allow an attacker to manipulate data belonging to other users. CVE-2025-40773 has been assigned to this vulnerability. A CVSS v3.1 base score of 3.5 has been calculated; the CVSS vector string is (CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N). A CVSS v4 score has also been calculated for CVE-2025-40773. A base score of 5.1 has been calculated; the CVSS vector string is (CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N). 3.2.4 STORING PASSWORDS IN A RECOVERABLE FORMAT CWE-257 Affected server applications store user passwords in an encrypted format in their databases. Decryption keys are accessible to users with administrative privileges, which allows them to recover passwords. Successful exploitation of this vulnerability enables an attacker to obtain and use valid user passwords. This can lead to unauthorized access to user accounts, data breaches, and potential system compromise. CVE-2025-40774 has been assigned to this vulnerability. A CVSS v3.1 base score of 4.4 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N). A CVSS v4 score has also been calculated for CVE-2025-40774. A base score of 6.7 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/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 Thomas Wache and Yann Breut from Airbus Defence and Space - Cyber Program reported one of the vulnerabilities to Siemens.
4. MITIGATIONS Siemens has released a new version for SiPass integrated and recommends updating to the latest version: Update to V3.0 or a later version. Restrict access to authorized and trusted personnel only. Avoid uploading untrusted image files in affected applications. As a general security measure, Siemens strongly recommends protecting network access to affected products with appropriate mechanisms. It is advised to follow recommended security practices in order to run the devices in a protected IT environment. 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-599451 in HTML and CSAF. 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). 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: 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. These vulnerabilities are not exploitable remotely.
5. UPDATE HISTORY October 16, 2025: Initial Republication of Siemens SSA-599451