---
id: "CVE-2026-82120"
kind: "vulnerability"
aliases: ["CVE-2026-82120"]
title: "HiRDB: heap buffer overflow in server lets attackers run code"
severity: "critical"
cvss: 9.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["database", "hirdb", "hitachi", "package", "self-hosted"]
not_affected_if: ["not-running-hirdb"]
published_at: "2026-10-27T10:16:56+00:00"
first_seen_at: "2026-10-27T10:31:02+00:00"
updated_at: "2026-10-27T10:31:33+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82120", "first_seen_at": "2026-10-27T10:31:02+00:00"}]
---

# HiRDB: heap buffer overflow in server lets attackers run code

HiRDB is a database server from Hitachi. A heap-based buffer overflow in the server lets an attacker overwrite memory, which can lead to code execution on the database host.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed HiRDB Server version against the affected ranges: Version 10 before `10-12-01`, and Version 9 from `09-00` through `09-66-22` (including the 9(32) and Additional Function variants).

## Fix

- Upgrade HiRDB Server to `10-12-01` or later for Version 10, or move to a fixed release of the 9.x line as published by the vendor (fixed version for 9.x not stated in the sources).

## Timeline

- 2026-10-27T10:31:02+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-82120

## From the sources

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.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_