Unchecked Enum Cast in NI grpc-device Leading to DoS

Mitigation Strategies

The immediate mitigation step is to upgrade NI grpc-device to version 2.18.0 or later, where this vulnerability has been patched.

Until the upgrade can be applied, restrict network access to the grpc-device service to trusted users only, minimizing exposure to potentially malicious crafted messages.

Useful 0 Not Useful 0

Executive Summary

CVE-2026-48140 is a vulnerability in the NI grpc-device software, specifically in the BeginSidebandStream function. It involves an unchecked enum cast, meaning the software does not properly validate certain enum values it receives.

An attacker can exploit this by sending a specially crafted message containing an out-of-range enum value, which triggers invalid enum states and causes undefined behavior in the software.

This undefined behavior can potentially lead to a denial of service condition, where the affected system or service becomes unavailable or crashes.

Useful 0 Not Useful 0

Impact Analysis

The primary impact of this vulnerability is a potential denial of service (DoS) on systems running NI grpc-device versions up to 2.17.0.

An attacker with network access and low privileges can exploit this vulnerability without any user interaction, causing the affected service to crash or become unresponsive.

This can disrupt normal operations, leading to downtime and loss of availability of the affected service.

Useful 0 Not Useful 0

Detection Guidance

Detection of this vulnerability involves monitoring for specially crafted messages sent to the NI grpc-device BeginSidebandStream function that contain out-of-range enum values.

Since the vulnerability is triggered by invalid enum states caused by out-of-range values, network traffic analysis focusing on grpc-device communication could help identify suspicious messages.

No specific detection commands or signatures are provided in the available resources.

Useful 0 Not Useful 0

Compliance Impact

The vulnerability in NI grpc-device involves a denial of service risk due to an unchecked enum cast, which primarily impacts system availability.

While the vulnerability could affect system reliability and availability, there is no direct information indicating an impact on data confidentiality or integrity.

Therefore, based on the provided information, there is no explicit indication that this vulnerability directly affects compliance with common standards and regulations such as GDPR or HIPAA, which focus heavily on data protection and privacy.

Useful 0 Not Useful 0