CVE-2025-43715

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.

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.02%
Affected: Nullsoft Nullsoft Scriptable Install System
Published at:
Updated at:

References

Link Tags
https://sourceforge.net/p/nsis/bugs/1315/
https://nsis.sourceforge.io/Docs/AppendixF.html#v3.11-rl

Frequently Asked Questions

What is the severity of CVE-2025-43715?
CVE-2025-43715 has been scored as a high severity vulnerability.
How to fix CVE-2025-43715?
To fix CVE-2025-43715, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-43715 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-43715 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-43715?
CVE-2025-43715 affects Nullsoft Nullsoft Scriptable Install System.
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