CVE-2026-48141
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThere is a memory leak in NI grpc-device BeginSidebandStream that may result in denial of service due to memory exhaustion. This affects NI grpc-device 2.17.0 and prior versions.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA memory leak exists in the BeginSidebandStream function of NI grpc-device versions 2.17.0 and prior. When invoked, the function fails to properly deallocate allocated memory resources, causing cumulative memory exhaustion over repeated calls that can lead to denial of service.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 2025= 2026< 2.18.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed NI software componentsCheck for presence of NI InstrumentStudio or NI Grpc Device Server on the system. Look for installation directories or use system inventory tools to list NI software packages.Affected if Either NI InstrumentStudio (any version) or NI Grpc Device Server is installed on the system
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Determine NI InstrumentStudio versionOpen NI InstrumentStudio and navigate to Help > About, or check the installed version in the Windows Programs and Features list. Compare the version number to the affected ranges: versions <= 2025 or version 2026.Affected if The installed version is 2025 or earlier, or is exactly version 2026
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Determine NI Grpc Device Server versionCheck the gRPC Device Server version by running the server executable with a version flag (such as --version or -v), or by inspecting the server binary file properties. Compare against the affected range: versions prior to 2.18.0.Affected if The installed NI Grpc Device Server version is less than 2.18.0
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Identify BeginSidebandStream usageMonitor network traffic or application logs for calls to the BeginSidebandStream function, which is invoked during gRPC communication sessions. Check if the system processes gRPC requests that trigger this function.Affected if The system processes gRPC communications that invoke BeginSidebandStream, particularly repeated or bulk requests
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Monitor memory consumptionUse system monitoring tools (such as Task Manager, PerfMon, or similar) to observe the memory footprint of the NI gRPC Device Server process over time. Track memory growth across multiple hours or repeated operations.Affected if The NI gRPC Device Server process exhibits continuous memory growth without stabilization, indicating potential memory leak
A system is affected if it runs NI InstrumentStudio versions 2025 or earlier (or version 2026) or NI Grpc Device Server versions prior to 2.18.0, and processes gRPC communications that invoke the BeginSidebandStream function, resulting in observable memory accumulation.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped2.18.0
Upgrade NI grpc-device to a version beyond 2.17.0. If upgrade is not immediately feasible, monitor memory usage and consider restarting affected services periodically to prevent memory exhaustion.
NI Grpc Device Server 2.18.0
- Upgrade NI Grpc Device Server to version 2.18.0 or later to resolve the memory leak in BeginSidebandStream
- For Instrumentstudio, verify with NI that your specific version (2025 or 2026) is compatible with grpc-device 2.18.0, or check if NI has released an updated Instrumentstudio version that includes the fixed grpc-device component
- After upgrading, monitor memory usage to confirm the memory leak is resolved
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-48141 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-48141 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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