CVE-2026-48140

Weakness

There is an unchecked enum cast vulnerability in NI grpc-device BeginSidebandStream that may allow an attacker to trigger invalid enum states and undefined behavior, potentially resulting in a denial of service. Successful exploitation requires an attacker to supply a specially crafted message containing an out-of-range value. This affects NI grpc-device 2.17.0 and prior versions.

Affected products

• ni instrumentstudio
• ni ni_grpc_device_server

References

• https://github.com/ni/grpc-device/security/advisories/GHSA-prfr-q8h3-mqxv
• https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/multiple-vulnerabilities-in-ni-grpc-device-server.html