CVE-2026-48140 Unchecked enum cast vulnerability in NI grpc-device in BeginSidebandStream
An attacker can cause a denial of service in NI grpc-device by sending a crafted message with an invalid enum value.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-48140?
CVE-2026-48140 is a high-severity vulnerability in NI InstrumentStudio, published on 19 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-704
Which versions are affected by CVE-2026-48140?
It affects 2 products.
Products include Ni Instrumentstudio, Ni Ni Grpc Device Server.
How do I fix CVE-2026-48140?
No fix has been published for CVE-2026-48140 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-48140 being exploited?
There is no known exploitation of CVE-2026-48140 in the wild and no public exploit code.
Other vulnerabilities in NI InstrumentStudio
- CVE-2026-48137 Untrusted pointer dereference in NI grpc-device sideband streaming API
- CVE-2026-9142 Insecure Default Credentials vulnerability in NI grpc-device when TLS configuration is not present
- CVE-2026-48138 Out-of-bounds read vulnerability in the NI grpc-device streaming API
- CVE-2026-48139 NULL pointer dereference vulnerability in NI grpc-device data moniker service
- CVE-2026-9143 Incorrect Conversion between Numeric Types in NI grpc-device due to missing range checks in CodeGen
Sources
Also known as GHSA-prfr-q8h3-mqxv.