Hitachi Coding Software Suite: Hidden accounts or hard-coded credentials
Summary
Hitachi Coding Software Suite (HCSS) up to and including version 3.3.0 contains hidden accounts or hard-coded credentials. An unauthenticated remote attacker who finds or uses these credentials can gain unauthorized access to the software without the normal login process. The software manages coding and marking devices such as printers, so unauthorized access can affect label production and printer control, especially if the installation is reachable from untrusted networks.
Affected
- Hitachi Coding Software Suite (HCSS) 0 to 3.3.0 (default configuration unaffected per vendor data)
Fixed in
- Upgrade to HCSS V4.0.0 or later (vendor fix). Exact build number and intermediate patch releases: Unknown.
Workaround
- Unknown. Hitachi lists no mitigations or workarounds; upgrading is the only vendor-supported fix.
- Third-party guidance (not from Hitachi): identify and disable hidden or default accounts and rotate credentials.
Exploitation
- No reports of exploitation in the wild and no public proof of concept found in the sources checked.
- CISA SSVC: Exploitation none, Automatable yes, Technical Impact total.
- CISA KEV status: Unknown (not verified).
- One aggregator lists an EPSS score of 0.0029 (model estimate).
Our recommendation
- Inventory all HCSS installations and their versions.
- Upgrade installations at V3.3.0 or earlier to V4.0.0 as soon as the change window allows; treat the related HCSS CVEs CVE-2026-82824 to CVE-2026-82828 as one patch.
- Do not expose HCSS to the internet; restrict access to the production LAN or OT segment.
- Review accounts for anything unexpected and rotate passwords on HCSS installations.
- Monitor Hitachi's advisory page and CISA KEV for changes.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Hitachi Coding Software Suite Public Statement www.hitachi-ies.com
- OpenCVE CVE-2026-82829 app.opencve.io
- GitHub Advisory GHSA-gf4c-rx3m-whpx github.com
- Vulners VulnRichment CVE-2026-82829 vulners.com
- Hitachi HIRT Acknowledgments www.hitachi.com
- Hitachi Industrial EU: HCSS product page hitachi-industrial.eu
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 03:43.
Original description (NVD)
Hitachi Coding Software Suite contains a vulnerability related to Hidden Functionality vulnerability which allows an attacker to gain unauthorized access by exploiting hidden accounts or hard coded credentials. This issue affects Hitachi Coding Software Suite: through 3.3.0.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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