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Vulnerability record · CVE-2026-66109 · published 25 August 2026

CVE-2026-66109: Missing authorization vulnerability

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.

8.5 CVSS 4.0 High EPSS 0.16% · top 95.4% CWE-862 · Missing authorization Deferred
8.5CVSS 4.0 base score
0.16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
28 Aug 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://jvn.jp/en/jp/JVN33423625/
https://www.skyseaclientview.net/news/260824_01/

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Source: NIST National Vulnerability Database (record CVE-2026-66109), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.