Siemens RUGGEDCOM APE1808 Vulnerability Advisory
Siemens RUGGEDCOM APE1808 Vulnerability Advisory
Date Published: November 12, 2026
Source: CISA
Palo Alto Networks has published information on a vulnerability in PAN-OS related to the Node2Shell vulnerability. This advisory lists the related Siemens Industrial products affected by this vulnerability. The following versions of Siemens RUGGEDCOM APE1808 are affected: RUGGEDCOM APE1808 vers:all/* (CVE-2026-111497). Customers are advised to consult and implement the workarounds provided in Palo Alto Networks’ upstream security notifications.
This vulnerability impacts Critical Infrastructure Sectors, specifically Critical Manufacturing, and affects devices deployed worldwide. Siemens ProductCERT reported this vulnerability to CISA.
As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for Industrial Security, and to follow the recommendations in the product manuals.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. This includes minimizing network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Additionally, control system networks and remote devices should be located behind firewalls and isolated from business networks.
When remote access is required, CISA advises using more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. It is also important to recognize VPN is 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. 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. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at CISA.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
The initial release date for this advisory was 2026-10-30.
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