Siemens Teamcenter
Reflected XSS in Siemens Teamcenter /auth/ redirect flow lets unauthenticated attackers inject JavaScript into authenticated sessions (CVE-2026-58113).
CISA republished Siemens advisory SSA-157465 for CVE-2026-58113, a reflected cross-site scripting flaw (CVSS 6.1) in the /auth/ authentication redirect flow of Siemens Teamcenter V2412, V2506, V2512, and V2606. An unauthenticated attacker can craft a URL that injects arbitrary JavaScript into an authenticated user's browser, enabling data theft or actions within the victim's Teamcenter session. Fixed versions are available for all affected releases; Enzo Alvarez of Bishop Fox reported the vulnerability.
- Reflected XSS in Teamcenter /auth/ endpoint tracked as CVE-2026-58113, CVSS 6.1
- Crafted URLs inject JavaScript into authenticated users' sessions
- Affects Teamcenter V2412, V2506, V2512, V2606; patched versions released
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2026-58113 | Reflected XSS in Siemens Teamcenter authentication redirect flow Siemens Teamcenter versions across the V2412, V2506, V2512, and V2606 releases fail to properly encode user-supplied input that is reflected into HTML attribute contexts in the authentication redirect flow served by the /auth/ endpoint. An unauthenticated remote attacker can craft a malicious URL; when an authenticated user loads it, arbitrary JavaScript executes in the user's browser within the victim's Teamcenter session. The attacker can then perform actions in Teamcenter as the victim, such as reading or modifying data accessible to that session. Any organization running one of the affected Teamcenter versions whose /auth/ endpoint is reachable by users is exposed, with risk concentrated on instances that are internet-facing or reachable by untrusted clients. As of now there is no known exploitation, no public proof-of-concept, the flaw is not in CISA's KEV catalog, and EPSS assigns only a 0.2% probability of exploitation within 30 days. Do: Upgrade affected installations to the fixed versions: Teamcenter V2412.0013, V2506.0010, V2512.2607, or V2606.2607, respectively. Until patched, limit who can reach the /auth/ endpoint (restrict to trusted networks or require VPN), and caution users against clicking links to Teamcenter URLs from untrusted sources. Check web server and proxy logs for requests to /auth/ containing unexpected parameters or script payloads as an indicator of probing. | 8.5 | <1% |
| largeplausibly on the order of 100k–1M enterprise users across tens of thousands of deployments (Teamcenter is Siemens' flagship PLM platform); the subset of /auth/… |
Full article740 words · extracted from cisa.gov · click to collapse
Summary
A reflected cross site scripting vulnerability in the authentication redirect flow (/auth/) of Teamcenter allows an unauthenticated remote attacker to inject JavaScript into an authenticated user's session by crafting a malicious URL. Successful exploitation may enable the attacker to read data or perform actions within the victim's Teamcenter session. Siemens has released new versions for the affected products and recommends to update to the latest versions.
The following versions of Siemens Teamcenter are affected:
- Teamcenter V2412 vers:intdot/<2412.0013 (CVE-2026-58113)
- Teamcenter V2506 vers:intdot/<2506.0010 (CVE-2026-58113)
- Teamcenter V2512 vers:intdot/<2512.2607 (CVE-2026-58113)
- Teamcenter V2606 vers:intdot/<2606.2607 (CVE-2026-58113)
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 6.1 | Siemens | Siemens Teamcenter | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') |
Background
- Critical Infrastructure Sectors: Critical Manufacturing, Information Technology
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: Germany
Vulnerabilities
CVE-2026-58113
Affected applications do not properly encode user-supplied input reflected into HTML attribute contexts within the authentication redirect flow (/auth/ endpoint). This could allow an unauthenticated remote attacker to inject arbitrary JavaScript into the browser of an authenticated user who loads a crafted URL, enabling the attacker to perform actions within the victim's Teamcenter session.
Affected Products
Siemens Teamcenter
Vendor:
Siemens
Product Version:
Teamcenter V2412 < V2412.0013, Teamcenter V2506 < V2506.0010, Teamcenter V2512 < V2512.2607, Teamcenter V2606 < V2606.2607
Product Status:
known_affected
Relevant CWE: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 6.1 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Acknowledgments
- Enzo Alvarez from Bishop Fox reported this vulnerability to Siemens.
General Recommendations
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 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
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-157465 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 these vulnerabilities.
- 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-157465 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-157465 advisory |
Legal Notice and Terms of Use
Text extracted automatically; images, tables and formatting may be missing. Original: https://www.cisa.gov/news-events/ics-advisories/icsa-26-258-07