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CVE-2026-81533: CWE-121: Stack-based Buffer Overflow in MongoDB BI Connector ODBC Driver

0
Medium
VulnerabilityCVE-2026-81533cvecve-2026-81533cwe-121
Published: 08/28/2026 (08/28/2026, 20:28:02 UTC)
Source: CVE Database V5
Vendor/Project: MongoDB
Product: BI Connector ODBC Driver

Description

An application using the MongoDB BI Connector ODBC Driver may encounter a memory-safety issue when a submitted SQL statement contains an unusually long run of digits following a LIMIT clause. The issue occurs only on connections where the driver's optional prefetch setting is enabled, and stems from the driver copying the digit sequence into a fixed-size internal buffer without checking its length. A user able to influence the numeric portion of a LIMIT clause could cause the hosting application process to terminate unexpectedly or corrupt adjacent memory in that process.

CVSS v4.0

Score 6.0medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
None
Vuln. Integrity
Low
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

Technical Details

Data Version
5.2
Assigner Short Name
mongodb
Date Reserved
2026-08-26T22:33:47.670Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a9206c9acd9273b4963cf63

Added to database: 08/28/2026, 22:08:09 UTC

Last updated: 08/29/2026, 02:52:27 UTC

Views: 9

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