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Vulnerabilities

Vulnerability · CVE-2025-43715

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

Published Apr 17, 2025 · catalog updated Oct 15, 2026 · Nullsoft Nullsoft Scriptable Install System

Check if you run it

No confirmed exploitation is on record for CVE-2025-43715. EPSS is 0.24%. Act only if a listed version of Nullsoft Nullsoft Scriptable Install System is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.24%
Remediation
Version ranges on file
Affected products
vendor Nullsoft Nullsoft Scriptable Install System 0 <3.11

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Nullsoft Nullsoft Scriptable Install System 0 <3.110 <3.11

How to fix CVE-2025-43715

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-43715. EPSS is 0.24%. Act only if a listed version of Nullsoft Nullsoft Scriptable Install System is installed.

Which versions are affected?

Compare what you have installed with Nullsoft Nullsoft Scriptable Install System 0 <3.11 0 <3.11. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-754. EPSS 0.24%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 17, 2025 · NIST NVD

    Detected

    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.

  2. Oct 15, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-43715

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-43715

    30-day exploitation probability 0.2%

    first.org
  • EUVDVulnerability recordEUVD-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 winnin

    euvd.enisa.europa.eu
  • NIST NVDVulnerability recordCVE-2025-43715

    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 winnin

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.