8.1

CVE-2025-43715: nullsoft nullsoft scriptable install system

CVSS: 8.1v3.1HighDeferred
AliasesUBUNTU-CVE-2025-43715DEBIAN-CVE-2025-43715
Published 17-04-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-43715 is a high (CVSS 8.1) vulnerability in nullsoft nullsoft scriptable install system. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.5% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.24%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 17-04-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

+0.04 pp

From 0.20% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.24%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • nsisAll versions (No fix recorded) | < 3.11-1
Nullsoft1 product
Ubuntu1 product
  • nsisAll versions (No fix recorded)

3 vendors · 3 products

References

6 links