CVE-2026-19004Network attack vector

Code execution via unclamped output-parameter buffers

Published Aug 12, 2026 · Updated Aug 12, 2026

Heap-based buffer overflow in MongoDB BI Connector ODBC Driver before 1.4.9 allows remote attackers to corrupt client process memory. The stored-procedure output-parameter handler processes crafted server metadata without clamping writes to the allocated buffer. Successful exploitation requires connection to an untrusted or impersonated database server; consequences range from a process crash and memory disclosure to code execution.

CVSS severity8.8
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in MongoDB BI Connector ODBC Driver before 1.4.9 allows remote attackers to corrupt client process memory. The stored-procedure output-parameter handler processes crafted server metadata without clamping writes to the allocated buffer. Successful exploitation requires connection to an untrusted or impersonated database server; consequences range from a process crash and memory disclosure to code execution.

The record

CVE
CVE-2026-19004
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
MongoDB
Product
MongoDB BI Connector ODBC Driver
Classifications
CWE-122, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 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=1.0.0 <1.4.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MongoDB · MongoDB BI Connector ODBC Driverversion=1.0.0 <1.4.9

Published CVSS scores

8.8MongoDB, Inc.CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:N
8.1MongoDB, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution

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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