CVE-2026-4129

Improper Access Controls in NI SystemLink

Published Sep 10, 2026 CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
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 2026 Q3 and prior versions. 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.
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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 2026 Q3 and prior versions.
Title Improper Access Controls in NI SystemLink
First Time appeared Ni
Ni systemlink
Ni systemlink Server
Weaknesses CWE-862
CPEs cpe:2.3:a:ni:systemlink:*:*:*:*:*:*:*:*
cpe:2.3:a:ni:systemlink_server:*:*:*:*:*:*:*:*
Vendors & Products Ni
Ni systemlink
Ni systemlink Server
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 8.6, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
NI
Published
Updated
Sep 16, 2026, 4:24 PM
Reserved
Mar 13, 2026, 2:11 PM
Status
Awaiting Analysis
Published
Sep 10, 2026, 4:17 PM
Modified
Sep 16, 2026, 5:17 PM