CVE-2026-81533Network attack vector

Process memory corruption via oversized LIMIT digits

Published Aug 28, 2026 · Updated Aug 28, 2026

Stack-based buffer overflow in MongoDB BI Connector ODBC Driver before 1.4.10 allows remote authenticated users to corrupt process memory. The get_limit method copies an unbounded run of digits after a LIMIT clause into a fixed-size stack buffer when optional prefetch is enabled. An authenticated user who can shape SQL sent by a hosting application can crash that process or overwrite adjacent memory in it.

CVSS severity6.0
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in MongoDB BI Connector ODBC Driver before 1.4.10 allows remote authenticated users to corrupt process memory. The get_limit method copies an unbounded run of digits after a LIMIT clause into a fixed-size stack buffer when optional prefetch is enabled. An authenticated user who can shape SQL sent by a hosting application can crash that process or overwrite adjacent memory in it.

The record

CVE
CVE-2026-81533
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
MongoDB
Product
MongoDB BI Connector ODBC Driver
Classifications
CWE-121
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.4.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MongoDB · MongoDB BI Connector ODBC Driverversion=0 <1.4.10

Published CVSS scores

6.0MongoDBCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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