Is CVE-2020-15145 actively exploited?

No active exploitation of CVE-2020-15145 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-15145 be exploited remotely?

No. CVE-2020-15145 requires local access to exploit.

What is the CVSS score of CVE-2020-15145?

CVE-2020-15145 has a CVSS score of 8.2 (HIGH).

HOME VULNERABILITIESCVE-2020-15145

HIGH

CVE-2020-15145

CWE-276Published: August 14, 2020· Updated: Jun 17, 2026

8.2

CVSS v3.1

Official Description

In Composer-Setup for Windows before version 6.0.0, if the developer's computer is shared with other users, a local attacker may be able to exploit the following scenarios. 1. A local regular user may modify the existing `C:\ProgramData\ComposerSetup\bin\composer.bat` in order to get elevated command execution when composer is run by an administrator. 2. A local regular user may create a specially crafted dll in the `C:\ProgramData\ComposerSetup\bin` folder in order to get Local System privileges. See: https://itm4n.github.io/windows-server-netman-dll-hijacking. 3. If the directory of the php.exe selected by the user is not in the system path, it is added without checking that it is admin secured, as per Microsoft guidelines. See: https://msrc-blog.microsoft.com/2018/04/04/triaging-a-dll-planting-vulnerability.

NVD Source

Technical Analysis

CVE-2020-15145 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.2.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.