CVE-2026-39454
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedSKYSEA 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThis is a local privilege escalation vulnerability in SKYSEA Client View and SKYMEC IT Manager where the installation folder has overly permissive file access controls. A non-administrative local user can write or modify files in the product's installation directory, potentially replacing legitimate executables with malicious ones that execute with administrative privileges when the software runs.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 2024.005.10a<= 21.200.07jCVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check if SKYSEA Client View or SKYMEC IT Manager is installedLook for the product folders in typical installation locations such as C:\Program Files\SKYSEA or C:\Program Files (x86)\SKYSEA, and C:\Program Files\SKYMEC or C:\Program Files (x86)\SKYMEC. Also check the Windows Registry under HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall for entries containing 'SKYSEA' or 'SKYMEC'.Affected if Either product is found in the system
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Identify the installed versionIf found, locate the main executable in the installation folder (commonly named similar to the product) and check its file version properties. Alternatively, query the Windows Registry key for the product (such as HKLM\SOFTWARE\Skygroup\SKYSEA or HKLM\SOFTWARE\Skygroup\SKYMEC) and read the DisplayVersion value.Affected if The installed version is at or below 21.200.07j for SKYSEA Client View, or at or below 2024.005.10a for SKYMEC IT Manager
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Verify file permissions on the installation directoryOpen a command prompt and run 'icacls "[installation_folder_path]"' where the path is the identified installation directory. Review the output to see which users and groups have write or modify permissions.Affected if Non-administrative users or the Users group are listed with (F) Full, (M) Modify, or (W) Write permissions on the installation folder
A user is affected if either SKYSEA Client View version 21.200.07j or lower or SKYMEC IT Manager version 2024.005.10a or lower is installed AND non-administrative users have write or modify access to the product's installation directory.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataRestrict file permissions on the product's installation folder to prevent write access by non-administrative users; ensure only Administrators and the SYSTEM account have write/modify permissions to the installation directory.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-39454 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-39454 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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