CVE-2026-81532
Buffer overflow in MongoDB BI ODBC driver can crash host and allow code execution.
Is CVE-2026-81532 being exploited?
Not confirmed. CVE-2026-81532 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 0.29% probability of exploitation in the next 30 days.
How severe is CVE-2026-81532?
CVE-2026-81532 is rated High with a CVSS score of 8.7. 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-2026-81532?
Yes. A fix has been recorded for CVE-2026-81532. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-81532 affect?
CVE-2026-81532 affects MongoDB Connector for BI ODBC driver, Applications/BI tools using that ODBC driver. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-81532?
Upgrade the ODBC driver to the patched release, restrict BI/ODBC access, and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Crafted SQL via the MongoDB BI ODBC driver can overflow a diagnostic buffer, crash the host process and potentially enable code execution in the hosting application.
Immediate action required
- affected< 1.4.10
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.