CVE-2026-50602: Acer Planet9 privilege escalation via incorrect file permissions

CVE-2026-50602 · Severity: info · Published 2026-08-17

Planet9 is a background service component used by Acer systems that runs with system-level privileges. A configuration error grants excessive permissions to the application executable, allowing authenticated local users to replace it with malicious code that executes with the same system privileges when the service restarts or the system reboots.

Vendors: Acer.

Quick answers

Is CVE-2026-50602 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-50602 being exploited in the wild.
How severe is CVE-2026-50602?
Informational severity, published 17 August 2026.
Which products and versions are affected?
Acer Planet9.
Is there a fix for CVE-2026-50602?
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-2026-50602 attacked?
It is attacked with local access, in a hosted service.
Am I affected by CVE-2026-50602?
Check whether you run Acer Planet9. 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

The vulnerability is a privilege escalation flaw resulting from incorrect file permissions (CWE-276) on an executable used by the Planet9 background service. The service operates with SYSTEM privileges, but the executable file permits write access to non-administrative users. An authenticated local attacker can exploit this by replacing or modifying the executable, achieving arbitrary code execution with SYSTEM privileges upon service restart or system boot. No patch information is currently available in the advisory.

Affected products

  • Acer Planet9

Timeline

  • 2026-08-17: disclosed

References

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