High severity · published Apr 20, 2026
CVE-2026-39454
SKYSEA Client View and SKYMEC IT Manager provided by Sky Co.,LTD
7.8
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SI
SKYMEC IT Manager · Sky Co.,LTD.
Ver.2024.005.10a and earlier · source: vendor, NVD
SC
SKYSEA Client View · Sky Co.,LTD.
Ver.21.200.07j and earlier · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-39454
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-39454
Third Party Advisory
https://jvn.jp/en/jp/JVN63376363/
Vendor Advisory
https://www.skyseaclientview.net/news/260420_01/
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