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HP Support Assistant Weak ACL and DLL Loading Vulnerability

Potential vulnerabilities were identified in the ACL and DLL loading for certain HP PC products, which might allow arbitrary code execution.



HP Reference

HPSBGN03722 Rev. 1

Release date

March 15, 2021

Last updated

March 15, 2021



Potential Security Impact

Execution of arbitrary code.


A weak ACL may potentially allow an unauthorized person to load arbitrary code.

Relevant Common Vulnerabilities and Exposures (CVE) List

Reported by: Rémi ESCOURROU (@remiescourrou)

List of CVE IDs


Base Score

Base Vector




Learn more about CVSS 3.1 base metrics, which range from 0 to 10.



For a PGP signed version of this security bulletin, write to:


CVE-2020-28418, PSR-2021-0003


A patch was released on March 10, 2021 that will automatically update HP Support Assistant clients during the weekly scan where it checks for updates. This patch is applied to any version of HP Support Assistant version 8.

To manually update HP Support Assistant to the latest version, use the following steps:

  1. Open HP Support Assistant from the Start menu.

  2. Click the My devices tab.

  3. Select Check for updates and messages.

  4. During this process, the impacted files are replaced and the old files are deleted. To confirm that the patched file is present, check the version of this file (%programfiles(x86)%\Hewlett-Packard\HP Support Framework\UninstallHPSA.exe). It should be version

Affected products

Identify the affected products.

  • Version and lower of HP Support Assistant.

Revision history

This document has been revised according to the information below.

List of versions





Initial Release

March 15, 2021

Additional information

Follow these links for additional information.

Third-party security patches

Third party security patches that are to be installed on systems running HP software products should be applied in accordance with the customer's patch management policy.


For issues about implementing the recommendations of this Security Bulletin, visit to learn about your HP support options.


To report a potential security vulnerability with any HP supported product, send email to:

Security bulletin archive

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Legal information

System management and security procedures must be reviewed frequently to maintain system integrity. HP is continually reviewing and enhancing the security features of software products to provide customers with current secure solutions.

HP is broadly distributing this Security Bulletin in order to bring to the attention of users of the affected HP products the important security information contained in this Security Bulletin. HP recommends that all users determine the applicability of this information to their individual situations and take appropriate action. HP does not warrant that this information is necessarily accurate or complete for all user situations and, consequently, HP will not be responsible for any damages resulting from user's use or disregard of the information provided in this Security Bulletin. To the extent permitted by law, HP disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose, title and non-infringement.

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