nsis: NSIS (Nullsoft Scriptable Install System) 3.06.1 before 3.12 sometimes uses the Low IL temp directory when executing...
CVE-2026-42171 is fixed in nsis on 1 platform by DEBIAN-CVE-2026-42171 (version 3.12-1), released April 24, 2026. It is not reported as exploited. Patch Radar priority: High.
NSIS (Nullsoft Scriptable Install System) 3.06.1 before 3.12 sometimes uses the Low IL temp directory when executing as SYSTEM, allowing local attackers to gain privileges (if they can cause my_GetTempFileName to return 0, as shown in the references).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| nsis · Debian 14 | 3.12-1 | DEBIAN-CVE-2026-42171 | Apr 24, 2026 |
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