CVE-2026-19003: MongoDB BI Connector ODBC driver may write outside an allocated buffer when the setup dialog opens a data source with oversized path settings
A data source definition containing an over-length file path setting may cause the MongoDB BI Connector ODBC Driver setup dialog to write outside the bounds of an allocated buffer. The issue stems from an incorrect buffer capacity calculation in the dialog's file and folder selection handling, and is reached only when a user opens the setup dialog for such a data source and initiates a file or folder selection. Depending on build configuration, the result may range from abnormal process termination to, under certain conditions, execution of unintended code in the context of the user running the dialog.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-19003?
CVE-2026-19003 is rated as high severity with a CVSS score of 7.8.
How do I fix CVE-2026-19003?
To resolve CVE-2026-19003, upgrade to MongoDB BI Connector ODBC Driver version 1.4.9 or later.
What causes the vulnerability CVE-2026-19003?
CVE-2026-19003 is caused by an incorrect buffer capacity calculation in the file and folder selection handling of the MongoDB BI Connector ODBC Driver setup dialog.
What types of data are affected by CVE-2026-19003?
CVE-2026-19003 affects data source definitions with over-length file path settings in the MongoDB BI Connector ODBC Driver.
What are the potential consequences of exploiting CVE-2026-19003?
Exploitation of CVE-2026-19003 may lead to buffer overflow vulnerabilities, which can allow an attacker to execute arbitrary code.