Advisoriesby IbisNational InstrumentsCVE-2026-4129
National Instruments NI SystemLink: improper access control
Fix: upgrade to 26.5.0 or later (2 fixed versions below)
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| SystemLink Product | < 26.5.0 | 26.5.0 |
| SystemLink Server Product | < 26.5.0 | 26.5.0 |
Details and references
- CVSS 4.0
- 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:X/V:X/RE:X/U:X
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-862