CVE-2024-20965Network attack vector

Authenticated database hang or repeatable crash

Published Jan 16, 2024 · Updated Jun 20, 2025

Denial of service in Oracle MySQL Server and MySQL NDB Cluster allows remote authenticated users to repeatedly crash or hang database services. Oracle identifies the Server Optimizer and Cluster General components but has not published the faulty operation or triggering input. High-privilege database access is required, and the reported consequence is limited to service availability.

CVSS severity4.9
Medium
EPSS probability1.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Oracle MySQL Server and MySQL NDB Cluster allows remote authenticated users to repeatedly crash or hang database services. Oracle identifies the Server Optimizer and Cluster General components but has not published the faulty operation or triggering input. High-privilege database access is required, and the reported consequence is limited to service availability.

The record

CVE
CVE-2024-20965
Published
Jan 16, 2024
Updated
Jun 20, 2025
Vendor
Oracle
Product
MySQL Server
Classifications
T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 20, 2025Record 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=* <=8.0.35
  2. Affected versionversion=* <=8.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Oracle · MySQL Serverversion=* <=8.0.35; version=* <=8.2.0
Oracle · MySQL NDB Clusterversion=* <=7.5.32; version=* <=7.6.28; version=* <=8.0.35; version=* <=8.2.0

Published CVSS scores

4.9OracleCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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