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