{"id":"CVE-2025-43715","title":"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 ca…","summary":"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 ca…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-754"],"published":"2025-04-17","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:18:07.120","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-43715","references":[{"url":"https://nsis.sourceforge.io/Docs/AppendixF.html#v3.11-rl","label":"cve@mitre.org"},{"url":"https://sourceforge.net/p/nsis/bugs/1315/","label":"cve@mitre.org"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-563922.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00326,"epssPercentile":0.25501,"ingestedAt":"2026-10-15T03:30:12.812Z","vendor":"Nullsoft","product":"Nullsoft Scriptable Install System","affected":["scriptable_install_system < 3.11"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2025-04-17T19:16:35.360975Z"},"slug":"CVE-2025-43715","body":"## Overview\n\nNullsoft 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}