CVE-2026-82121: Hitachi HiRDB origin validation error

CVE-2026-82121 · Severity: high · CVSS 7.5 · Published 2026-10-27

HiRDB is an enterprise database server used by organizations to manage critical data. An origin validation error vulnerability allows an unauthenticated attacker on the network to read sensitive data from the database without authorization. This affects Windows deployments of HiRDB using system switchover or parallel server configurations.

Technologies: Hitachi HiRDB Server Version 10, Hitachi HiRDB Server Version 9, Hitachi HiRDB Server Version 9(32), Hitachi HiRDB Server with Additional Function Version 9, Hitachi HiRDB Server with Additional Function Version 9(32). Vendors: Hitachi.

Quick answers

Is CVE-2026-82121 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-82121 being exploited in the wild.
How severe is CVE-2026-82121?
High severity, with a CVSS score of 7.5, published 27 October 2026.
Which products and versions are affected?
Hitachi HiRDB Server Version 10 10-00 through 10-11-01 on Windows; Hitachi HiRDB Server Version 9 09-00 through 09-66-22 on Windows; Hitachi HiRDB Server Version 9(32) 09-02 through 09-66-22 on Windows; Hitachi HiRDB Server with Additional Function Version 9 09-00 through 09-66-/V on Windows; and 1 more.
Is there a fix for CVE-2026-82121?
Yes: fixed in HiRDB Server Version 10: 10-12-01, 10-11-02, 10-08-05. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-82121 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-82121?
Check whether you run Hitachi HiRDB Server Version 10, Hitachi HiRDB Server Version 9, Hitachi HiRDB Server Version 9(32) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: HiRDB Server Version 10: 10-12-01, 10-11-02, 10-08-05

Technical details

The vulnerability is an origin validation error (CWE-346) that permits unauthorized access to the database. It is exploitable over the network without authentication or user interaction, and results in confidentiality breach. The issue is specific to Windows deployments: HiRDB/Single Server with switchover facility without IP address inheritance enabled, or HiRDB/Parallel Server on Windows.

Affected products

  • Hitachi HiRDB Server Version 10 10-00 through 10-11-01 on Windows
  • Hitachi HiRDB Server Version 9 09-00 through 09-66-22 on Windows
  • Hitachi HiRDB Server with Additional Function Version 9 09-00 through 09-66-/V on Windows
  • Hitachi HiRDB Server Version 9(32) 09-02 through 09-66-22 on Windows
  • Hitachi HiRDB Server with Additional Function Version 9(32) 09-00 through 09-66-/V on Windows

Timeline

  • 2026-10-27: disclosed

References

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