Critical Vulnerability in HiRDB Server: CVE-2026-82116

Executive Summary

A critical vulnerability, CVE-2026-82116, has been identified in HiRDB Server with a CVSS score of 9.8. This vulnerability affects various versions of HiRDB Server, including Version 10, Version 9, and their 32-bit counterparts, as well as versions with additional functions. The vulnerability is classified as a Missing Authentication for Critical Function Vulnerability.

Technical Analysis

The vulnerability is caused by a missing authentication mechanism for a critical function in HiRDB Server. This allows an attacker to perform actions without proper authentication. The affected products and their versions are as follows: - 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

How It Gets Exploited

An unauthenticated remote attacker could exploit this vulnerability by sending a crafted request to the affected HiRDB Server. The specific action would involve attempting to access a critical function without providing any authentication credentials. When the vulnerability is triggered, the server fails to authenticate the request properly, potentially allowing the attacker to perform critical actions without authorization. This could lead to a range of impacts, including but not limited to, data breaches, system modifications, or service disruptions.

Impact Assessment

The CVSS score for this vulnerability is 9.8, indicating a critical severity level. The impact is considered high across confidentiality, integrity, and availability. An attacker could achieve significant unauthorized access or control over the affected systems.

Recommended Actions

To mitigate this vulnerability, it is recommended to update the affected HiRDB Server versions to the following or later: - HiRDB Server Version 10: 10-12-01 - HiRDB Server Version 9: 09-66-23 - HiRDB Server with Additional Function Version 9: 09-66/V1 - HiRDB Server Version 9(32): 09-66-23 - HiRDB Server with Additional Function Version 9(32): 09-66-/V1 Additionally, users should review and implement security best practices, such as restricting network access to the HiRDB Server and implementing robust authentication mechanisms for critical functions.

Sources

- National Vulnerability Database (NVD) - Hitachi Security Advisory: https://www.hitachi.com/products/it/software/security/info/vuls/hitachi-sec-2026-148/index.html