High-severity RCE-capable buffer overflow in MongoDB's BI Connector ODBC driver used in enterprise analytics; could enable code execution in client processes across organizations.
CVE-2026-19001
Buffer overflow in MongoDB BI Connector ODBC ODBC driver allows potential arbitrary code execution.
Is CVE-2026-19001 being exploited?
Not confirmed. CVE-2026-19001 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.40% probability of exploitation in the next 30 days.
How severe is CVE-2026-19001?
CVE-2026-19001 is rated Critical with a CVSS score of 9.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-19001?
Yes. A fix has been recorded for CVE-2026-19001. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-19001 affect?
CVE-2026-19001 affects MongoDB BI Connector ODBC Driver, Applications/clients using the BI Connector for metadata retrieval. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-19001?
Apply vendor patch when released; restrict/monitor ODBC access and block untrusted metadata inputs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary code execution or process crash in client apps via crafted long catalog/schema/object names during metadata retrieval.
Immediate action required
- affected>= 1.0.0 and < 1.4.9
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.