CVE-2026-75159Network attack vectorHinoki check available

Unauthenticated service interruption via GSSAPI double-free

Published Aug 27, 2026 · Updated Aug 27, 2026

Double-free in MongoDB Connector for BI 2.4.0 through 2.14.29 allows remote attackers to crash mongosqld via Kerberos authentication. The GSSAPI error path releases the same allocation twice while processing a crafted authentication exchange, terminating the process. The service must be network-reachable with Kerberos enabled; the result is a BI Connector service interruption until mongosqld restarts.

CVSS severity8.2
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Double-free in MongoDB Connector for BI 2.4.0 through 2.14.29 allows remote attackers to crash mongosqld via Kerberos authentication. The GSSAPI error path releases the same allocation twice while processing a crafted authentication exchange, terminating the process. The service must be network-reachable with Kerberos enabled; the result is a BI Connector service interruption until mongosqld restarts.

The record

CVE
CVE-2026-75159
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
MongoDB
Product
MongoDB Connector for BI
Classifications
CWE-415, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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=2.4.0 <2.14.30

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MongoDB · MongoDB Connector for BIversion=2.4.0 <2.14.30

Published CVSS scores

5.9MongoDBCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
8.2MongoDBCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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-415Double Free
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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