# CVE-2026-9789: Acer NitroSense privilege escalation in PSAdminAgent service

Source: https://junglewise.ai/threats/cve-2026-9789-acer-nitrosense-privilege-escalation-in-psadminagent-service  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-28. Updated: 2026-05-28  
License: CC BY 4.0 with a link back

CVE-2026-9789 · Severity: info · CVSS 8.5 · Published 2026-05-28

A security vulnerability in Acer NitroSense, a utility used to monitor and manage system performance on Acer laptops, could allow a local user to delete critical system files. By exploiting a flaw in how the software handles internal communication, an individual with basic access to the computer can execute commands with high-level administrative privileges. This could lead to system instability, data loss, or a complete system crash.

Technologies: [Acer NitroSense](https://junglewise.ai/threats/technologies/nitrosense). Vendors: [Acer](https://junglewise.ai/threats/vendors/acer).

## Quick answers

**Is CVE-2026-9789 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9789 being exploited in the wild.

**How severe is CVE-2026-9789?** Informational severity, with a CVSS score of 8.5, published 28 May 2026.

**Which products and versions are affected?** Acer NitroSense prior to 3.01.3052.

**Is there a fix for CVE-2026-9789?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-9789 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-9789?** Check whether you run Acer NitroSense at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A Local Privilege Escalation (LPE) vulnerability exists in the PSAdminAgent service of Acer NitroSense versions prior to 3.01.3052. The service creates a Named Pipe with a weak Access Control List (ACL), allowing any authenticated local user to connect and issue commands. The service fails to validate the caller's privilege level before executing file deletion operations. Consequently, a low-privileged attacker can leverage this communication channel to delete arbitrary files with SYSTEM-level permissions. The vulnerability is tracked as CVE-2026-9789 and includes elements of path traversal (CWE-22) and improper privilege management (CWE-269).

## Affected products

- Acer NitroSense prior to 3.01.3052

## Timeline

- 2026-05-28: advisory: NVD publication date
- 2026-05-27: disclosed: Initial disclosure by Acer

## References

- [https://community.acer.com/en/kb/articles/19670](https://community.acer.com/en/kb/articles/19670)

## Related threats

- [Acer NitroSense arbitrary code execution via exposed DevTools](https://junglewise.ai/threats/cve-2026-50228-an-unauthenticated-local-attacker-can-connect-to-the-electron)
- [Acer NitroSense MQTT broker authentication bypass](https://junglewise.ai/threats/cve-2026-50227-an-unauthenticated-local-attacker-can-connect-to-the-mqtt-broker)
- [Acer NitroSense privilege escalation via System Monitoring](https://junglewise.ai/threats/cve-2026-50610-acer-nitrosense-privilege-escalation-via-system-monitoring)
- [Acer System Monitoring insufficient access control in Named Pipe service](https://junglewise.ai/threats/cve-2026-50609-acer-system-monitoring-insufficient-access-control-in-named-pipe)
- [Acer NitroSense authentication bypass in WebSocket handshake](https://junglewise.ai/threats/cve-2026-50608-acer-nitrosense-authentication-bypass-in-websocket-handshake)