CVE-2015-9267

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-10-01 · updated 2026-06-17
Weakness: CWE-269

Description

Nullsoft Scriptable Install System (NSIS) before 2.49 uses temporary folder locations that allow unprivileged local users to overwrite files. This allows a local attack in which either a plugin or the uninstaller can be replaced by a Trojan horse program.

Affected products

Debian Linux: 8.0
Nullsoft Scriptable Install System: before 2.49 — fixed in 2.49

How to fix

Upgrade to a fixed version: Nullsoft Scriptable Install System 2.49. Check the vendor advisory for mitigations.

References

http://jvn.jp/en/jp/JVN68418039/index.html
https://lists.debian.org/debian-lts-announce/2018/11/msg00041.html
https://sourceforge.net/p/nsis/bugs/1125/
http://jvn.jp/en/jp/JVN68418039/index.html
https://lists.debian.org/debian-lts-announce/2018/11/msg00041.html
https://sourceforge.net/p/nsis/bugs/1125/

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