---
id: CVE-2026-81533
title: >-
  An application using the MongoDB BI Connector ODBC Driver may encounter a
  memory-safety issue when a submitted SQL statement contains an unusually long
  run of digits following a LIMIT clause
summary: >-
  An application using the MongoDB BI Connector ODBC Driver may encounter a
  memory-safety issue when a submitted SQL statement contains an unusually long
  run of digits following a LIMIT clause. The issue occurs only on connections
  where th…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H'
cwe:
  - CWE-121
vendor: mongodb
product: bi_connector_odbc_driver
affected:
  - bi_connector_odbc_driver < 1.4.10
patched:
  - bi_connector_odbc_driver 1.4.10
published: '2026-08-28'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T18:53:28.090'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81533'
references:
  - url: 'https://github.com/mongodb/mongo-bi-connector-odbc-driver/releases'
    label: cna@mongodb.com
tags:
  - nvd
epss: 0.00366
epssPercentile: 0.27802
ingestedAt: '2026-09-11T19:57:09.303Z'
---

## Overview

An application using the MongoDB BI Connector ODBC Driver may encounter a memory-safety issue when a submitted SQL statement contains an unusually long run of digits following a LIMIT clause. The issue occurs only on connections where the driver's optional prefetch setting is enabled, and stems from the driver copying the digit sequence into a fixed-size internal buffer without checking its length. A user able to influence the numeric portion of a LIMIT clause could cause the hosting application process to terminate unexpectedly or corrupt adjacent memory in that process.

## Affected

- `bi_connector_odbc_driver < 1.4.10`

## Remediation

Upgrade past the affected range:

- `bi_connector_odbc_driver 1.4.10`