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

Quick assessment

Affected
MongoDB BI Connector ODBC Driver
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

能够提交 SQL 的应用程序用户，如果使用 MongoDB Connector for BI ODBC 驱动程序，可以提供一个位置游标语句，其游标名称超过了内部固定长度缓冲区的大小。由于在驱动程序构建其诊断消息之前，名称的长度未受限制，与该缓冲区相邻的内存会被用户提供的内容覆盖。这可能导致宿主应用程序进程终止，并可能允许在其中执行非预期的代码。

CVSS 8.8 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-81532

Vulnerability Information
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Vulnerability Title
BI Connector ODBC Driver Improper Bounds Checking on Cursor Name Leading to Memory Corruption
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
MongoDB BI Connector ODBC Driver 0 ~ 1.4.10 -

II. Public POCs for CVE-2026-81532

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III. Intelligence Information for CVE-2026-81532

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Vendor Pages for CVE-2026-81532 (1)

Same Patch Batch · MongoDB · 2026-08-28 · 11 CVEs total

CVE-2026-77586 8.0 HIGH MongoDB Connector for BI Unescaped Object Names in Generated SHOW CREATE Output
CVE-2026-81490 7.7 HIGH MongoDB Connector for BI Improper Error Handling During Schema Sampling May Cause Loss of
CVE-2026-81517 7.5 HIGH MongoDB Connector for BI Improper Error Handling of Log Write Failures May Cause Loss of S
CVE-2026-81518 7.5 HIGH BI Connector Optional Client Certificate Verification Allows Unauthenticated Connections
CVE-2026-81520 7.5 HIGH MongoDB Connector for BI Unbounded Authentication Negotiation Leading to Connection Exhaus
CVE-2026-81533 7.1 HIGH MongoDB BI Connector ODBC Driver Memory-Safety Issue When Parsing Oversized LIMIT Values
CVE-2026-76798 6.3 MEDIUM MongoSQL Transition Readiness Tool Improper Output Encoding in Generated HTML Reports
CVE-2026-76797 6.3 MEDIUM MongoSQL Transition Readiness Tool Improper Neutralization of Formula Elements in Generate
CVE-2026-77184 5.2 MEDIUM MongoDB Connector for BI Incomplete Escaping of Stored Metadata in Generated SHOW CREATE O
CVE-2026-76794 4.6 MEDIUM MongoDB BI Connector Transition Readiness Report Improper HTML Encoding When Processing Da

IV. Related Vulnerabilities

Same product: BI Connector ODBC Driver
Same vendor: MongoDB
Same weakness: CWE-121

V. Comments for CVE-2026-81532

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