| Name | CVE-2025-43715 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1103524 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| nsis (PTS) | bullseye | 3.06.1-1 | vulnerable |
| bullseye (security) | 3.06.1-1+deb11u1 | vulnerable |
| bookworm | 3.08-3+deb12u1 | vulnerable |
| trixie, sid | 3.11-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| nsis | source | (unstable) | 3.11-1 | | | 1103524 |
Notes
[bookworm] - nsis <no-dsa> (Minor issue)
[bullseye] - nsis <postponed> (Minor issue, follow bookworm)
https://sourceforge.net/p/nsis/bugs/1315/
https://nsis.sourceforge.io/Docs/AppendixF.html#v3.11-rl
Fixed by: https://sourceforge.net/p/nsis/code/7444/