← Vulnerability feed

Vulnerability record · CVE-2026-4129 · published 10 September 2026

CVE-2026-4129: Missing authorization vulnerability

There is an improper access control vulnerability in NI SystemLink that may allow an authenticated user with limited privileges to access host operating system files and directories that should be restricted. This vulnerability affects NI SystemLink and NI SystemLink Server versions prior to 2026 Q3.

8.6 CVSS 4.0 High EPSS 0.35% · top 74.0% CWE-862 · Missing authorization Awaiting Analysis
8.6CVSS 4.0 base score
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
16 Sep 2026Last modified by NVD

Description

There is an improper access control vulnerability in NI SystemLink that may allow an authenticated user with limited privileges to access host operating system files and directories that should be restricted. This vulnerability affects NI SystemLink and NI SystemLink Server versions prior to 2026 Q3.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/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:

References

LinkTags
https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/improper-access-cont

Track CVE-2026-4129 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.9CVE-2026-84869ScreenConnect client allows unauthorized file transfer and execution in remote sessionsA flaw in the ConnectWise ScreenConnect client lets files be transferred and executed inside an active remote session without authorization or Host c…KEVEPSS 0.92%analysed7.8CVE-2022-0492Linux kernel cgroups v1 release_agent privilege escalation and container escapeThe Linux kernel's cgroup_release_agent_write in kernel/cgroup/cgroup-v1.c mishandles authorization, letting the cgroups v1 release_agent feature be …KEVEPSS 5.5%analysed9.9CVE-2024-57726SimpleHelp missing authorization lets low-privilege technicians escalate to adminSimpleHelp remote support software v5.5.7 and earlier fails to properly authorize API key creation, allowing low-privilege technicians to mint API ke…KEVEPSS 67%analysed8.8CVE-2023-52163Digiever DS-2105 Pro time_tzsetup.cgi command injectionDigiever DS-2105 Pro firmware 3.1.0.71-11 exposes time_tzsetup.cgi to command injection, and the record also maps the issue to CWE-862 missing author…KEVEPSS 97%analysed6.6CVE-2025-40602SonicWall SMA1000 management console missing authorization privilege escalationThe SonicWall SMA1000 appliance management console (AMC) contains a local privilege escalation flaw caused by insufficient authorization, mapped to C…KEVEPSS 2.8%analysed9.1CVE-2025-6205DELMIA Apriso missing authorization allows privileged accessDELMIA Apriso Releases 2020 through 2025 contain a missing authorization flaw (CWE-862) that lets an attacker obtain privileged access to the applica…KEVEPSS 73%analysed8.6CVE-2025-20362Cisco Secure Firewall ASA/FTD VPN web server missing authorizationThe VPN web server in Cisco Secure Firewall ASA and FTD software fails to properly validate user-supplied input in HTTP(S) requests, allowing access …KEVEPSS 87%analysed7.3CVE-2021-39226Grafana snapshot endpoints allow unauthenticated view and deleteGrafana exposes snapshot endpoints that resolve to the snapshot with the lowest database key when accessed via literal paths such as /dashboard/snaps…KEVEPSS 100%analysed

Source: NIST National Vulnerability Database (record CVE-2026-4129), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.