CVE-2017-20236 ProSoft Technology CVE debrief

Who should care

Organizations using ProSoft Technology ICX35-HWC cellular gateways, especially those in industrial control systems or critical infrastructure, should prioritize patching this vulnerability to prevent potential system compromise.

Technical summary

The vulnerability exists in the web user interface of ProSoft Technology ICX35-HWC cellular gateways. An attacker can submit malicious input through unvalidated fields to inject and execute system commands. This can lead to root privileges and arbitrary command execution on the device. The vulnerability has a CVSS score of 9.3 and is classified as CRITICAL. It is essential for defenders to understand the technical details of this vulnerability to implement effective mitigations and prevent potential system compromise.

Defensive priority

High priority should be given to patching this vulnerability due to its critical severity and potential impact on system security. Defenders should verify system logs for suspicious activity and restrict access to the web user interface to trusted personnel only. Network segmentation and monitoring are also recommended to mitigate potential risks associated with this vulnerability. Additionally, defenders should review compensating controls for exposed systems while remediation is scheduled and verified. Regular vulnerability assessments and penetration testing are crucial to identify and address potential security gaps. Tracking exceptions, retesting remediated assets, and closing the item only after evidence is documented are essential steps in the remediation process. The vulnerability's critical severity and potential for system compromise necessitate immediate attention and thorough defensive measures. Organizations should prioritize patching and implement a multi-layered defense strategy to minimize risks. By taking these steps, defenders can enhance the security posture of their systems and reduce the likelihood of successful exploitation. Furthermore, defenders should consider conducting regular security audits to identify potential vulnerabilities and implement proactive measures to prevent similar attacks in the future. By adopting a proactive and multi-faceted approach to security, organizations can better protect themselves against this and other potential threats. The CVE record and NVD entry provide valuable resources for defenders seeking to understand and mitigate this vulnerability. By leveraging these resources and taking a proactive approach to security, defenders can reduce the risk of exploitation and protect their systems from potential harm. It is essential for defenders to stay informed about the latest security threats and best practices to ensure the security and integrity of their systems. The CVE record and NVD entry are essential resources for defenders seeking to understand and mitigate this vulnerability. By leveraging these resources and taking a proactive approach to security, defenders can reduce the risk of exploitation and to

Recommended defensive actions

• Apply patches or updates provided by the vendor to fix the input validation vulnerability.
• Implement additional security measures such as network segmentation and monitoring.
• Conduct regular vulnerability assessments and penetration testing.
• Restrict access to the web user interface to trusted personnel only.
• Monitor system logs for suspicious activity.

Evidence notes

The CVE record was published on 2026-04-03T23:17:00.447Z and last modified on 2026-07-21T07:10:00.117Z. The NVD entry is currently Analyzed. Vendor advisory and third-party advisory resources are available. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.