CVE-2020-15145
Local privilege elevation in Composer-Setup for Windows
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
6.7
Local privilege elevation in Composer-Setup for Windows
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.
- Record
CVE-2020-15145- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:N - Weakness
- CWE-276
- Updated
- 2026-11-02
EUVDEUVD-2020-7231
6.7
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.
- Record
EUVD-2020-7231- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:N - Updated
- 2026-11-03
NVD
6.7
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.
- Record
CVE-2020-15145- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:N - CVSS 3.1
- 8.2 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H - CVSS 2.0
- 4.4 Medium
AV:L/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-276
- Updated
- 2026-11-02
OSV
8.2
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.
- Record
CVE-2020-15145- CVSS 3.1
- 8.2 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-15145 is a medium vulnerability (CVSS 6.7) in Getcomposer Composer-setup, published August 14, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.41%, the 35th percentile. No source names a fixed version.