Siemens Industrial Edge Management Auth Bypass, CVSS 7.1
Summary
CISA and Siemens ProductCERT published ICS Advisory ICSA-26-111-11 disclosing an authorization bypass vulnerability (CVE-2026-33892, CVSS 7.1) in Siemens Industrial Edge Management. Affected versions include IEM Pro V1 (<1.15.17), IEM Pro V2 (<2.1.1), and IEM Virtual (<2.8.0). An unauthenticated remote attacker could circumvent authentication and access connected Industrial Edge Devices through the remote connection feature. Siemens recommends updating to the latest versions.
“Affected management systems do not properly enforce user authentication on remote connections to devices.”
Organizations operating Siemens Industrial Edge Management in OT/ICS environments should prioritize inventorying IEM instances and verifying remote connection feature status — exploitation requires this feature to be enabled. The vulnerability allows impersonation of legitimate users without credentials, which could enable lateral movement to connected Industrial Edge Devices in manufacturing networks. CISA's recommended practices (network isolation, VPNs for remote access, defense-in-depth) provide actionable compensating controls while patches are deployed.
What changed
CISA republished Siemens ProductCERT advisory SSA-609469, disclosing an authentication bypass vulnerability (CWE-305) in Siemens Industrial Edge Management products. The flaw allows an unauthenticated remote attacker to circumvent authentication if the remote connection feature is enabled and the attacker has identified the header and port used for remote connections. Successful exploitation permits tunneling to the connected device.
Affected organizations running Siemens Industrial Edge Management in critical manufacturing environments should update to V1.15.17, V2.1.1, or V2.8.0 as the primary remediation. As a compensating control, Siemens recommends limiting network access to affected products to trusted parties only and configuring environments per Siemens Industrial Security guidelines. Organizations should perform impact analysis and risk assessment before deploying defensive measures.
Archived snapshot
Apr 22, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
ICS Advisory
Siemens Industrial Edge Management
Release Date
April 21, 2026
Alert Code ICSA-26-111-11 Related topics: Industrial Control System Vulnerabilities, Industrial Control Systems View CSAF
Summary
Industrial Edge Management contains an authorization bypass vulnerability that could be exploited by an unauthenticated remote attacker to circumvent authentication and to access connected Industrial Edge Devices through the remote connection feature. Siemens has released new versions for the affected products and recommends to update to the latest versions.
The following versions of Siemens Industrial Edge Management are affected:
- Industrial Edge Management Pro V1 vers:intdot/>=1.7.6|<1.15.17 (CVE-2026-33892)
- Industrial Edge Management Pro V2 vers:intdot/>=2.0.0|<2.1.1 (CVE-2026-33892)
- Industrial Edge Management Virtual vers:intdot/>=2.2.0|<2.8.0 (CVE-2026-33892)
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 7.1 | Siemens | Siemens Industrial Edge Management | Authentication Bypass by Primary Weakness |
Background
- Critical Infrastructure Sectors: Critical Manufacturing
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: Germany
Vulnerabilities
Affected management systems do not properly enforce user authentication on remote connections to devices. This could facilitate an unauthenticated remote attacker to circumvent authentication and impersonate a legitimate user. Successful exploitation requires that the attacker has identified the header and port used for remote connections to devices and that the remote connection feature is enabled for the device. Exploitation allows the attacker to tunnel to the device. Security features on this device itself (e.g. app specific authentication) are not affected.
Affected Products
Siemens Industrial Edge Management
Vendor:
Siemens Product Version:
Industrial Edge Management Pro V1, Industrial Edge Management Pro V2, Industrial Edge Management Virtual Product Status:
known_affected
Remediations
Mitigation
Ensure network access to affected products is limited to trusted parties only
Vendor fix
Update to V1.15.17 or later version
https://iehub.eu1.edge.siemens.cloud/
Vendor fix
Update to V2.1.1 or later version
https://iehub.eu1.edge.siemens.cloud/
Vendor fix
Update to V2.8.0 or later version
https://iehub.eu1.edge.siemens.cloud/
Relevant CWE: CWE-305 Authentication Bypass by Primary Weakness
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L |
Acknowledgments
- Siemens ProductCERT reported this vulnerability 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 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-609469 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: 2026-04-14
| Date | Revision | Summary |
|---|---|---|
| 2026-04-14 | 1 | Publication Date |
| 2026-04-21 | 2 | Initial CISA Republication of Siemens ProductCERT SSA-609469 advisory |
Legal Notice and Terms of Use
This product is provided subject to this Notification and this Privacy & Use policy.
Vendor
- Siemens
Tags
Sector: Critical Manufacturing Sector Topics: Industrial Control System Vulnerabilities, Industrial Control Systems
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