Vulnerability · Published Apr 20, 2026 · Assigned by jpcert
CVE-2026-39454
High 7.8
In plain English
A high-severity incorrect default permissions 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 0.1% (higher than 1% of all known vulnerabilities).
Severity (CVSS 3.0)7.8High
Exploit odds (30 days)0.1%top 98.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
SKYSEA Client View and SKYMEC IT Manager provided by Sky Co.,LTD. configure the installation folder with improper file access permission settings. A non-administrative user may manipulate and/or place arbitrary files within the installation folder of the product. As a result, arbitrary code may be executed with the administrative privilege.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Sky Co.,LTD. | SKYSEA Client View | Ver.21.200.07j and earlier |
| Sky Co.,LTD. | SKYMEC IT Manager | Ver.2024.005.10a and earlier |
Weakness: CWE-276 · Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H