# CVE-2026-81532: BI Connector ODBC Driver Improper Bounds Checking on Cursor Name Leading to Memory Corruption

> CVE-2026-81532: BI Connector ODBC Driver Improper Bounds Checking on Cursor Name Leading to Memory Corruption. CVSS 8.8 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-81532
Last updated: 2026-09-11T18:54:31Z

- Published: 2026-08-28 20:26 UTC · Updated: 2026-09-11 18:54 UTC · Assigner: mongodb
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 0.49%, 42th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-121

## Description

A user able to submit SQL through an application using the MongoDB Connector for BI ODBC driver can supply a positioned-cursor statement whose cursor name exceeds the size of an internal fixed-length buffer. Because the name length is not bounded before the driver builds its diagnostic message, memory adjacent to that buffer is overwritten with user-supplied content. This can terminate the hosting application process and may allow unintended code to run within it.

## Affected vendors and products

- MongoDB: BI Connector ODBC Driver

## Tracked companies

- [MongoDB Atlas](https://rewindex.com/company/mongodb-atlas.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-81532)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-81532)
- [https://github.com/mongodb/mongo-bi-connector-odbc-driver/releases](https://github.com/mongodb/mongo-bi-connector-odbc-driver/releases)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-81532 · Markdown: https://rewindex.com/cve/CVE-2026-81532.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-81532 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:31.627Z