High severity · published Aug 28, 2026
CVE-2026-81532
BI Connector ODBC Driver Improper Bounds Checking on Cursor Name Leading to Memory Corruption
8.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
MongoDB · MongoDB
before 1.4.10 · source: vendor
BC
BI Connector Odbc Driver · Mongodb
before 1.4.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-81532
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-81532
Vendor Advisory
https://github.com/mongodb/mongo-bi-connector-odbc-driver/releases
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