Vulnerability · Published Aug 25, 2026 · Assigned by jpcert
CVE-2026-66109
High 7.8
In plain English
A high-severity missing authorization in SKYMEC IT Manager from Sky Co., LTD.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Severity (CVSS 3.0)7.8High
Exploit odds (30 days)0.2%top 94.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Sky Co., LTD. | SKYSEA Client View | 0 – through Ver.21.210.01f |
| Sky Co., LTD. | SKYMEC IT Manager | 2023.225.03a2024.005.10a |
Weakness: CWE-862 · Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H