Dashboard / CVE-2026-42171

CVE-2026-42171

HIGH
MEDIUM Priority: 0.02 BB Relevance: 41/100
Published: 2026-04-24 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Required
S: Unchanged
C: High
I: High
A: High

Description

NSIS (Nullsoft Scriptable Install System) 3.06.1 before 3.12 sometimes uses the Low IL temp directory when executing as SYSTEM, allowing local attackers to gain privileges (if they can cause my_GetTempFileName to return 0, as shown in the references).

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
nullsoft nullsoft_scriptable_install_system 3.06.1 – 3.12

References & Advisories (4)

Bug Bounty Relevance

41 / 100
✓ No authentication
✓ Low complexity

CVSS Score

7.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.21%
Raw Score 0.002100
Percentile 11.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00210
2026-10-28
0.00210

Intelligence Sources

nvd ref →

External Links