CVE-2026-39454

Name: CVE-2026-39454
Creator: NVD / NIST
Published: 2026-04-20T09:16:08.933+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.5/10EPSS 0.11%

Last modified Jun 17, 2026

CVE-2026-39454 is a high-severity vulnerability rated 8.5/10 on the CVSS scale. SKYSEA Client View and SKYMEC IT Manager provided by Sky Co.,LTD. configure the installation folder with improper file access permission settings. EPSS estimates a 0.11% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 4.0

8.5/10

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:X/V:X/RE:X/U:X

CVSS 3.0

7.8/10

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.11%

1.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Skygroup	Skymec It Manager	<= 2024.005.10a
Skygroup	Skysea Client View	<= 21.200.07j

References

https://jvn.jp/en/jp/JVN63376363/Third Party Advisory
https://www.skyseaclientview.net/news/260420_01/Vendor Advisory

Timeline

Published: Apr 20, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-39454?

How severe is CVE-2026-39454?

CVE-2026-39454 has a CVSS score of 8.5/10 (HIGH severity). The EPSS model estimates a 0.11% probability of exploitation in the next 30 days.

How do I fix CVE-2026-39454?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-39454?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST