Buffer overflow in MongoDB Bi Connector Odbc Driver
CVE-2026-81532
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.
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-81532?
- CVE-2026-81532 is a high-severity vulnerability in MongoDB Bi Connector Odbc Driver, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-08-28.
- How severe is CVE-2026-81532?
- High severity. CVSS v3 base score is 8.8 out of 10.