Buffer overflow in MongoDB Atlas SQL Odbc Driver
CVE-2026-120952
An out-of-bounds write in the MongoDB Atlas SQL ODBC Driver may be triggered when a value of a particular database type is retrieved into a fixed-width client-side target. The driver produces a textual form of the value that is longer than the fixed target the ODBC interface defines, and copies it without limiting the copy to the target's real size. A database user with basic write privileges can influence part of the data written outside the target, which may corrupt memory in the application using the driver and cause that application to terminate unexpectedly.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-120952?
- CVE-2026-120952 is a high-severity vulnerability in MongoDB Atlas SQL Odbc Driver, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2026-11-03.
- How severe is CVE-2026-120952?
- High severity. CVSS v3 base score is 7.1 out of 10.