CVE-2026-48139
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 NULL pointer dereference vulnerability in NI grpc-device in the data moniker service that may allow an attacker to cause a denial of service by triggering a crash. Successful exploitation requires an attacker to provide an unknown value to the data moniker service. 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 NULL pointer dereference vulnerability exists in NI grpc-device's data moniker service. An attacker can cause a denial of service by providing an unknown value to the data moniker service, triggering a NULL pointer dereference that crashes the application.
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 productCheck if either Ni InstrumentStudio or Ni Grpc Device Server is installed on the system. Look in standard installation directories or use system inventory tools to list installed NI software.Affected if Either product is installed and the version falls within the affected range
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Check InstrumentStudio versionLocate the InstrumentStudio installation and check its version. Typically found in program files or via the application's About/Help section.Affected if Version is 2025 or earlier, or exactly version 2026
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Check Ni Grpc Device Server versionLocate the Ni Grpc Device Server installation and determine its version number, usually viewable in server documentation or via --version flag if available.Affected if Version is below 2.18.0
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Verify data moniker service is enabledCheck the configuration of the NI Grpc Device Server to determine if the data moniker service is exposed and accessible. Review server configuration files or service enablement settings.Affected if The data moniker service is enabled and accessible to untrusted users
The environment is affected if either InstrumentStudio version 2025 or earlier/2026, or Ni Grpc Device Server version below 2.18.0 is installed AND the data moniker service is accessible to untrusted users.
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 newer than 2.17.0. If immediate upgrading is not feasible, restrict access to the data moniker service to prevent untrusted users from supplying unknown values.
Ni Grpc Device Server 2.18.0 or later
- Download NI grpc-device version 2.18.0 or later from the official NI website or GitHub releases
- Stop the currently running NI Grpc Device Server instance
- Install or deploy the updated NI Grpc Device Server version 2.18.0 or later
- Restart the NI Grpc Device Server service
- Verify the service is running correctly and test that the data moniker service functions properly
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-48139 — 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-2026-48139 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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