CVE-2026-9789
Deferred Deferred - Pending Action
Local Privilege Escalation in Acer NitroSense

Publication date: 2026-05-28

Last updated on: 2026-05-28

Assigner: 8fc372e3-d9c5-46e4-9410-38469745c639

Description
A Local Privilege Escalation (LPE) vulnerability affects Acer NitroSense software versions prior to 3.01.3052. The vulnerability stems from the the PSAdminAgent service, which creates a Named Pipe with a weak Access Control List (ACL). This allows any authenticated local user to connect and send commands. Because the service does not check the caller's privileges before running file deletion commands, a low-privileged local user can exploit this to delete arbitrary files with system authority.
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Meta Information
Published
2026-05-28
Last Modified
2026-05-28
Generated
2026-06-17
AI Q&A
2026-05-28
EPSS Evaluated
2026-06-16
NVD
CVE-2026-9789
EUVD
EUVD-2026-32700
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
acer nitrosense to 3.01.3052 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-732 The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.
CWE-269 The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
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Impact Analysis

This vulnerability can allow a low-privileged local user to escalate their privileges to system level by deleting arbitrary files with system authority. This can lead to system instability, data loss, or compromise of system integrity.

Executive Summary

This vulnerability is a Local Privilege Escalation (LPE) issue in Acer NitroSense software versions before 3.01.3052. It arises because the PSAdminAgent service creates a Named Pipe with a weak Access Control List (ACL), allowing any authenticated local user to connect and send commands.

Since the service does not verify the caller's privileges before executing file deletion commands, a low-privileged user can exploit this flaw to delete arbitrary files with system-level authority.

Detection Guidance

This vulnerability involves the PSAdminAgent service creating a Named Pipe with a weak Access Control List (ACL) that allows any authenticated local user to connect and send commands.

To detect this vulnerability on your system, you can check for the presence of the PSAdminAgent service and inspect the permissions of its Named Pipe.

For example, on a Windows system, you can use the following commands:

  • Use 'sc query PSAdminAgent' to verify if the PSAdminAgent service is running.
  • Use 'handle.exe -a | findstr PSAdminAgent' (from Sysinternals) to find Named Pipes related to PSAdminAgent.
  • Use 'icacls' on the Named Pipe path to check its ACL permissions.

If the Named Pipe has weak ACLs allowing access to low-privileged users, the system is vulnerable.

Mitigation Strategies

The immediate mitigation step is to update Acer NitroSense software to version 3.01.3056 or later, where this vulnerability is resolved.

Until the update can be applied, restrict access to the PSAdminAgent service and its Named Pipe by tightening ACL permissions to prevent low-privileged users from connecting.

Additionally, monitor and audit local user activities to detect any suspicious attempts to exploit this vulnerability.

Compliance Impact

The provided information does not specify how this Local Privilege Escalation vulnerability in Acer NitroSense software affects compliance with common standards and regulations such as GDPR or HIPAA.

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