CVE-2026-9143: Incorrect Conversion between Numeric Types in NI grpc-device due to missing range checks in CodeGen

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-19 · updated 2026-06-25
Weakness: CWE-681

Description

There is an incorrect conversion between numeric types vulnerability in NI grpc-device due to missing range checks in CodeGen. This may silently discard high bits if a size value exceeded the target type's range. This affects NI grpc-device 2.17.0 and prior versions.

Affected products

NI InstrumentStudio: through 2025; 2026-q1, 2026-q2
Ni Grpc Device Server: before 2.18.0 — fixed in 2.18.0

How to fix

Upgrade to a fixed version: Ni Grpc Device Server 2.18.0. Check the vendor advisory for mitigations.

References

https://github.com/ni/grpc-device/security/advisories/GHSA-rhh6-fvjv-8m84
https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/multiple-vulnerabilities-in-ni-grpc-device-server.html

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