CVE-2025-43715 — Nullsoft / Nullsoft Scriptable Install System

Description (CNA)

Nullsoft Scriptable Install System (NSIS) before 3.11 on Windows allows local users to escalate privileges to SYSTEM during an installation, because the temporary plugins directory is created under %WINDIR%\temp and unprivileged users can place a crafted executable file by winning a race condition. This occurs because EW_CREATEDIR does not always set the CreateRestrictedDirectory error flag.

Affected (CNA)

Vendor / product	Versions
Nullsoft / Nullsoft Scriptable Install System	affected 0 before 3.11

CWE

CWE-754

References

https://sourceforge.net/p/nsis/bugs/1315/
https://nsis.sourceforge.io/Docs/AppendixF.html#v3.11-rl

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

siemens-SADP

No English description supplied.

https://cert-portal.siemens.com/productcert/html/ssa-563922.html