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CVE-2026-48139 NI CVE debrief

CVE-2026-48139 is a high-severity vulnerability in NI grpc-device that could allow an attacker to cause a denial of service by triggering a crash through a NULL pointer dereference in the data moniker service. This vulnerability affects NI grpc-device version 2.17.0 and prior. Defenders should assess their exposure and prioritize patching due to the high CVSS score of 8.7.

Vendor
NI
Product
grpc-device
CVSS
HIGH 8.7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-19
Original CVE updated
2026-06-25
Advisory published
2026-06-19
Advisory updated
2026-06-25

Who should care

Organizations using NI grpc-device version 2.17.0 or prior should be aware of this vulnerability and take immediate action to limit exposure. This includes reviewing current versions, assessing potential attack vectors, and implementing compensating controls if necessary.

Technical summary

The vulnerability is caused by a NULL pointer dereference in the data moniker service of NI grpc-device. An attacker could exploit this vulnerability by providing an unknown value to the data moniker service, potentially leading to a denial of service through a system crash. The CVSS vector for this vulnerability is CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

Defensive priority

High priority due to CVSS score of 8.7 and potential for denial of service

Recommended defensive actions

  • Inventory NI grpc-device installations to identify affected versions
  • Review and apply available patches from the vendor
  • Implement compensating controls to limit exposure
  • Monitor for suspicious activity related to the data moniker service
  • Review system logs for potential exploitation attempts

Evidence notes

The primary evidence for this vulnerability comes from the NVD and CVE.org records. The vulnerability affects NI grpc-device version 2.17.0 and prior. Defenders should verify the current version of NI grpc-device in use and review the official vendor advisories for patching information.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-48139 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-48139

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-48139 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-48139

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://github.com/ni/grpc-device/security/advisories/GHSA-7vg9-5c74-289x

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/multiple-vulnerabilities-in-ni-grpc-device-server.html

    [email protected]

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.