CVE-2023-6457 is a medium severity incorrect default permissions flaw in the Hitachi Tuning Manager server component on Windows. Local users may read and write specific files. The record says versions before 8.8.5-04 are affected, so upgrade to 8.8.5-04 or later.
What's affected
- Product: Hitachi Tuning Manager, server component on Windows.
- Affected: versions before 8.8.5-04, per the record.
- Fixed: 8.8.5-04.
- Access needed: a local account with low privileges.
The record gives a CVSS 3.1 base score of 6.6 (medium) with the vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H. The CISA Known Exploited Vulnerabilities flag in the record is false. This post does not claim exploitation in the wild.
How to check if you're exposed
Check the installed version in Windows Apps and Features, or in the product help screen, and compare with 8.8.5-04.
icacls "C:\Program Files\HiCommand"
The path above is only an example. Use the actual install directory. The command lists permissions on that folder. Look for entries that give write access to broad groups such as Users or Everyone.
What to do now
- Find Tuning Manager servers and read their installed version.
- Upgrade to 8.8.5-04 or later, following the Hitachi security information page linked in the record.
- Review the permissions on the install directory and on data folders, and remove write access for ordinary users.
- Limit who can sign in to the server console.
- Run the free in-browser dependency scan at gold.safeguard.sh/scan on any project you build that bundles this component, and keep the result next to your inventory.
Why it matters
The record maps this issue to CWE-276 (Incorrect Default Permissions): Files or folders are installed with permissions that are wider than they should be, so local users can read or change things they should not.
Incorrect default permissions mean the installer sets file access wider than needed. A local user, who should have no say over the product files, can read or change them.
The score is medium because local access is required, but a management server often runs with high privileges and holds monitoring data. Writing to the wrong file can influence what runs. For that reason, treat the server as a protected host and keep ordinary user logins off it.
Quick check
Is remote exploitation possible?
The vector is local. An attacker needs a login on the Windows host.
Which versions are fixed?
The record says before 8.8.5-04 is affected. Check the Hitachi notice for exact guidance.
Sources
These are the references listed in the NVD record for this CVE. They were not fetched when this post was written, so confirm fixed versions in the advisory before acting.
Last reviewed: 19 October 2026.
