Summary
SINEC INS before V1.0 SP2 Update 6 is affected by multiple vulnerabilities. Siemens has released a new version for SINEC INS and recommends to update to the latest version.
The following versions of Siemens SINEC INS are affected:
- SINEC INS vers:intdot/<1.0.2.6
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 8.8 | Siemens | Siemens SINEC INS | Improper Neutralization of Special Elements used in an OS Command (‘OS Command Injection’), Path Traversal: ‘/dir/../filename’, Execution with Unnecessary Privileges, Use of a One-Way Hash with a Predictable Salt |
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
CVE-2026-46746
The application does not properly sanitize user input in the /api/sftp/uploadFiles endpoint, allowing the injection of shell command payloads via crafted directory names. These payloads are stored and executed when directory listings are retrieved. This could allow an authenticated remote attacker to execute arbitrary commands on the underlying operating system with the privileges of the affected service user (sinecins).
Affected Products
Siemens SINEC INS
Siemens
SINEC INS
known_affected
Remediations
Vendor fix
Update to V1.0 SP2 Update 6 or later version
https://support.industry.siemens.com/cs/ww/en/view/110002283/
Relevant CWE: CWE-78 Improper Neutralization of Special Elements used in an OS Command (‘OS Command Injection’)
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-2026-46747
The affected application does not properly sanitize path input in the `GET /api/sftp/uploadFiles` endpoint used for directory listing. This allows path traversal through crafted input, enabling access to unintended file system locations.
Affected Products
Siemens SINEC INS
Siemens
SINEC INS
known_affected
Remediations
Vendor fix
Update to V1.0 SP2 Update 6 or later version
https://support.industry.siemens.com/cs/ww/en/view/110002283/
Relevant CWE: CWE-26 Path Traversal: ‘/dir/../filename’
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 4.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
CVE-2026-46748
The affected system includes a binary that is configured with the cap_dac_override capability. This capability allows the process to bypass file system permission checks, resulting in unrestricted file system access. This could allow a local attacker to escalate privileges leading to arbitrary file modification and gaining root privileges on the system.
Affected Products
Siemens SINEC INS
Siemens
SINEC INS
known_affected
Remediations
Vendor fix
Update to V1.0 SP2 Update 6 or later version
https://support.industry.siemens.com/cs/ww/en/view/110002283/
Relevant CWE: CWE-250 Execution with Unnecessary Privileges
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-2026-46749
The affected application uses a password hashing implementation with a static, hardcoded salt shared across all users and installations, and is configured with an insufficient number of iterations. This could allow an attacker to efficiently recover user passwords using brute-force or precomputed attacks, potentially resulting in unauthorized access.
Affected Products
Siemens SINEC INS
Siemens
SINEC INS
known_affected
Remediations
Vendor fix
Update to V1.0 SP2 Update 6 or later version
https://support.industry.siemens.com/cs/ww/en/view/110002283/
Relevant CWE: CWE-760 Use of a One-Way Hash with a Predictable Salt
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H |
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.
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-860189 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: 2026-06-09
| Date | Revision | Summary |
|---|---|---|
| 2026-06-09 | 1 | Publication Date |
| 2026-06-23 | 2 | Initial CISA Republication of Siemens ProductCERT SSA-860189 advisory |