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.
Advisories
Source ID Title
EUVD EUVD EUVD-2025-11523 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 17 Apr 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 17 Apr 2025 02:30:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-754
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-04-17T19:16:59.738Z

Reserved: 2025-04-17T00:00:00.000Z

Link: CVE-2025-43715

cve-icon Vulnrichment

Updated: 2025-04-17T19:16:52.800Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-04-17T03:15:16.457

Modified: 2025-04-17T20:21:48.243

Link: CVE-2025-43715

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-06-23T19:31:59Z