Quick answers
- Is CVE-2026-48140 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-48140 being exploited in the wild.
- How severe is CVE-2026-48140?
- Medium severity, with a CVSS score of 6.5, published 19 June 2026.
- Which products and versions are affected?
- NI Grpc-Device <= 2.17.0; NI InstrumentStudio <= 26.3.0.
- Is there a fix for CVE-2026-48140?
- A patch was published on 2026-06-19: Version 2.18.0 released to address the issue Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-48140 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-48140?
- Check whether you run NI Grpc-Device or NI InstrumentStudio at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An unchecked enum cast vulnerability (CWE-704) exists in the BeginSidebandStream function of the NI grpc-device server. The root cause is a failure to validate input values before casting them to an internal enumeration type. An authenticated attacker can exploit this by sending a gRPC message containing an out-of-range value, triggering an invalid state or undefined behavior. This typically results in a service crash (denial of service). The vulnerability is addressed in NI grpc-device version 2.18.0.
Affected products
- NI grpc-device <= 2.17.0
- NI InstrumentStudio <= 26.3.0
Timeline
- 2026-06-19: advisory: NI and GitHub Security Advisory published
- 2026-06-19: patched: Version 2.18.0 released to address the issue