CVE-2026-66109: Missing authorization in Sky Co., LTD. SKYSEA Client View
Description
CVE-2026-66109 is a high-severity missing authorization vulnerability in SKYSEA Client View and SKYMEC IT Manager by Sky Co., LTD. An attacker with login access to the Windows system hosting the affected software can exploit this flaw to execute arbitrary code with SYSTEM privileges. No patch or official remediation information is currently available. The vulnerability requires local access with limited privileges and does not require user interaction. The CVSS score is 7.8, indicating a significant impact on confidentiality, integrity, and availability if exploited.
CVSS v3.0
Score 7.8high
Affected software
Sky Co., LTD.
SKYSEA Client View
Sky Co., LTD.
SKYMEC IT Manager
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves missing authorization checks in SKYSEA Client View and SKYMEC IT Manager. Exploitation requires an attacker to have login access to the Windows system where the software is installed. Successful exploitation allows arbitrary code execution with SYSTEM-level privileges, granting full control over the affected system. The CVSS 3.0 vector is AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, reflecting local attack vector, low attack complexity, low privileges required, no user interaction, unchanged scope, and high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently provided.
Potential Impact
If exploited, an attacker with local login privileges can gain SYSTEM-level code execution on the affected Windows system. This level of access allows complete control over the system, potentially leading to full compromise of the host and any data or processes running on it.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict local login access to trusted users only and monitor for suspicious activity on affected systems.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- jpcert
- Date Reserved
- 2026-08-05T03:02:30.692Z
- Cvss Version
- 3.0
- State
- PUBLISHED
Threat ID: 6a8d3833acd9273b49cafc35
Added to database: 08/25/2026, 06:37:39 UTC
Last enriched: 09/10/2026, 07:22:18 UTC
Last updated: 10/08/2026, 18:48:47 UTC
Views: 65
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