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CVE-2026-42171

HIGH

7.8

Descricao

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).

Detalhes CVE

Pontuacao CVSS v3.17.8

SeveridadeHIGH

Vetor CVSSCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vetor de ataqueLOCAL

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioREQUIRED

Publicado4/24/2026

Ultima modificacao4/24/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-427

Referencias

https://github.com/NSIS-Dev/nsis/blob/7359413009afd4f0fff472d841fc2f2cc0e0a5f8/Source/exehead/util.c#L475-L484(cve@mitre.org)

https://github.com/NSIS-Dev/nsis/commit/8e6f02205d5f22da6c7855dbfe59b2af667330ca(cve@mitre.org)

https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-gettempfilename(cve@mitre.org)

https://nsis.sourceforge.io/Docs/AppendixF.html#v3.12-cl(cve@mitre.org)

Correlacoes IOC

Sem correlacoes registradas

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