HiRDB Server: Heap-based buffer overflow allows remote code execution
Summary
Hitachi HiRDB Server contains a heap-based buffer overflow (CWE-122) that can be triggered over the network without authentication or user interaction. Successful exploitation can lead to a full compromise of confidentiality, integrity and availability, according to the CVSS 3.1 base score of 9.8 from the CNA. The affected versions cover HiRDB Server Version 10, Version 9, Version 9(32) and the Additional Function variants, and the flaw is fixed only for some lines.
Affected
- HiRDB Server Version 10: 10-00 before 10-12-01
- HiRDB Server Version 9: 09-00 through 09-66-22
- HiRDB Server with Additional Function Version 9: 09-00 through 09-66/V
- HiRDB Server Version 9(32): 09-02 through 09-66-22
- HiRDB Server with Additional Function Version 9(32): 09-00 through 09-66-/V
Fixed in
- HiRDB Server Version 10: 10-12-01, 10-11-02 and 10-08-05 (according to the vendor advisory for AIX, Linux and Windows)
- HiRDB Server Version 9 and 9(32) lines: Unknown. Contact Hitachi support.
Workaround
Unknown. No vendor workaround has been published.
Exploitation
- No evidence of active exploitation found at the time of research.
- No public proof of concept found at the time of research.
- CISA KEV status not verified.
Our recommendation
- Check whether any HiRDB Server installation exists in your environment, including vendor-supplied applications.
- Upgrade Version 10 installations to 10-12-01 or a listed fixed release.
- For Version 9 and 9(32) installations, obtain the fixed release or a migration plan from Hitachi support.
- Restrict network access to the HiRDB server port to known application servers only and do not expose it to the internet.
- Monitor logs for unusual connections to the HiRDB port.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Hitachi security advisory HITACHI-SEC-2026-147 www.hitachi.com
- CVE record mirror CVE-2026-82120 cve.threatint.com
- Strix CVE data CVE-2026-82120 www.strix.ai
- VulDB entry 427101 vuldb.com
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 30 Oct 2026, 16:25.
Original description (NVD)
Heap-based Buffer Overflow Vulnerability in HiRDB. This issue affects HiRDB Server Version 10: from 10-00 before 10-12-01; HiRDB Server Version 9: from 09-00 through 09-66-22; HiRDB Server with Additional Function Version 9: from 09-00 through 09-66/V; HiRDB Server Version 9(32): from 09-02 through 09-66-22; HiRDB Server with Additional Function Version 9(32): from 09-00 through 09-66-/V.
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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