Critical Security Update

To help protect your systems, customers using NI driver software 2026 Q2 or earlier should visit ni.com/ni-pal-update and follow the recommended actions.

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NI License Manager 4.2 Patch Details

Updated Mar 11, 2024

Overview

This document describes the NI License Manager 4.2 fixed issues and installation instructions.

Fixed Issue

A security vulnerability has been discovered and reported by Flexera in their FlexNet Publisher libraries. Heap-based buffer overflow in lmadmin in Flexera FlexNet Publisher (aka FlexNet License Server Manager) allows remote attackers to execute arbitrary code via a crafted 0x2f packet. Versions of NI License Manager prior to 4.0 distributed vulnerable versions of the FlexNet Publisher libraries but it no longer distributes the library in versions of the NI License Manager client 4.0 and later. 


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Installing the Patch

Complete the following steps to install the patch:

  1. Log in as an administrator.
  2. Close all NI software.
  3. Download, run, and follow the prompts for the NI_License_Manager self extracting EXE that can be found on the NI License Manager 4.2 download page.
  4. Additionally, the update can be installed using NI Update Service.

 

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