---
id: CVE-2026-120959
title: >-
  MongoDB Atlas SQL ODBC Driver uses ignored SQLBindCol BufferLength as
  fixed-width row-array stride, causing out-of-bounds writes
summary: >-
  A memory-handling flaw in the MongoDB Atlas SQL ODBC Driver can cause values
  returned for a query to be written outside the bounds of a buffer provided by
  the calling application. A party able to influence the values a query returns
  may …
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-787
vendor: MongoDB
product: Atlas SQL
affected:
  - atlas_sql >= 1.3.0 < 3.0.1
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T20:18:03.600Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-120959'
references:
  - url: 'https://www.mongodb.com/docs/sql-interface/changelog/'
  - url: 'https://jira.mongodb.org/browse/SQL-3458'
tags:
  - cve.org
epss: 0.00224
epssPercentile: 0.13143
ingestedAt: '2026-11-05T20:33:06.440Z'
---

## Overview

A memory-handling flaw in the MongoDB Atlas SQL ODBC Driver can cause values returned for a query to be written outside the bounds of a buffer provided by the calling application. A party able to influence the values a query returns may cause data to be placed at an unintended location in the client application's memory, which may result in unintended modification of that memory or termination of the client process. Reaching this condition depends on a specific, application-chosen way of requesting several result rows at once.

## Affected

- `atlas_sql >= 1.3.0 < 3.0.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.