CVE-2026-81532 HIGH

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

Vendor Mongodb
Product BI Connector ODBC Driver
Weakness CWE-121
Published August 28, 2026
Last update August 28, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 28, 2026 CVE published