CVE-2026-50602

Planet9 Incorrect Permission Assignment Vulnerability Information

Published Aug 17, 2026 CVSS 4.0 · 8.5 High EPSS < 1% KEV · Not listed
Description
A security vulnerability has been identified in Planet9 due to incorrect file permissions assigned to an application executable used by the Planet9 background service. The service runs with SYSTEM privileges, while the affected executable grants excessive permissions to non-administrative users. As a result, an authenticated local user could potentially modify or replace the executable and execute arbitrary code with SYSTEM privileges when the service starts or the system is restarted.

Remediation

Vendor Solution

An update is available that resolves this vulnerability by removing the affected executable files and uninstalling the background service (PLANET9DAService). Planet9 will automatically upgrade to the latest version.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Acer
Acer planet9 Background Service
Vendors & Products Acer
Acer planet9 Background Service
Type Values Removed Values Added
Description A security vulnerability has been identified in Planet9 due to incorrect file permissions assigned to an application executable used by the Planet9 background service. The service runs with SYSTEM privileges, while the affected executable grants excessive permissions to non-administrative users. As a result, an authenticated local user could potentially modify or replace the executable and execute arbitrary code with SYSTEM privileges when the service starts or the system is restarted.
Title Planet9 Incorrect Permission Assignment Vulnerability Information
Weaknesses CWE-732
References
Metrics cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Acer
Published
Updated
Aug 17, 2026, 3:55 PM
Reserved
Jun 5, 2026, 7:22 AM
Status
Deferred
Published
Aug 17, 2026, 3:16 AM
Modified
Sep 3, 2026, 4:41 PM