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CVE-2026-66109

Quick assessment

Affected
Sky Co., LTD. SKYSEA Client View
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SKYSEA Client View 和 SKYMEC IT Manager 中存在一处缺失授权漏洞。若该漏洞被利用，能够登录到受影响产品所在 Windows 系统的攻击者，可以以 SYSTEM 权限执行任意代码。

CVSS 8.5 · High EPSS 0.16% · P6

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 3

VendorProduct Version RangeStatus
Sky Co., LTD. SKYMEC IT Manager 2023.225.03a affected
2024.005.10a affected
Sky Co., LTD. SKYSEA Client View ≤ Ver.21.210.01f affected
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I. Basic Information for CVE-2026-66109

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A missing authorization vulnerability exists in SKYSEA Client View and SKYMEC IT Manager. If this vulnerability is exploited, an attacker who can log in to the Windows system on which the affected product is installed may execute arbitrary code with SYSTEM privilege.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Sky Co., LTD. SKYSEA Client View 0 ~ Ver.21.210.01f -
Sky Co., LTD. SKYMEC IT Manager 2023.225.03a -

II. Public POCs for CVE-2026-66109

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III. Intelligence Information for CVE-2026-66109

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Vendor Advisories for CVE-2026-66109 (2)

Same Patch Batch · Sky Co., LTD. · 2026-08-25 · 5 CVEs total

CVE-2026-69665 8.5 HIGH SKYSEA Client View和SKYMEC IT Manager权限错误漏洞
CVE-2026-68062 5.8 MEDIUM SKYSEA Client View路径遍历漏洞
CVE-2026-68960 5.8 MEDIUM SKYSEA Client View/IT Manager堆栈缓冲区溢出漏洞
CVE-2026-68959 5.8 MEDIUM SKYSEA Client View路径遍历漏洞

IV. Related Vulnerabilities

Same product: SKYSEA Client View
Same vendor: Sky Co., LTD.
Same weakness: CWE-862

V. Comments for CVE-2026-66109

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