CVE-2026-81532

BI Connector ODBC Driver Improper Bounds Checking on Cursor Name Leading to Memory Corruption

Published: Aug 28, 2026Updated: Sep 11, 2026 Sources: CVE List NVDCWE-121

8.8HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-121

Affected Products

MongoDB

commercial·US

BI Connector ODBC Driver

Databases

and 1 more affected products View all →

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Privilege Escalation

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References

https://github.com/mongodb/mongo-bi-connector-odbc-driver/releases

github.com

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