CVE-2024-21238Network attack vector

Authenticated database hang or repeatable crash

Published Oct 15, 2024 · Updated Mar 25, 2025

Denial of service in affected Oracle MySQL Server and MySQL Cluster releases allows remote authenticated users to hang or repeatedly crash services. Oracle identifies Server Thread Pooling and Cluster General as the loci but has not disclosed the faulty operation on untrusted protocol input. Exploitation requires low-privileged credentials, network reachability over supported database protocols, and high-complexity conditions; the reported impact is limited to service interruption.

CVSS severity5.3
Medium
EPSS probability0.88%
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 affected Oracle MySQL Server and MySQL Cluster releases allows remote authenticated users to hang or repeatedly crash services. Oracle identifies Server Thread Pooling and Cluster General as the loci but has not disclosed the faulty operation on untrusted protocol input. Exploitation requires low-privileged credentials, network reachability over supported database protocols, and high-complexity conditions; the reported impact is limited to service interruption.

The record

CVE
CVE-2024-21238
Published
Oct 15, 2024
Updated
Mar 25, 2025
Vendor
Oracle Corporation
Product
MySQL Server
Classifications
T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 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=* <=8.0.39
  2. Affected versionversion=* <=8.4.1
  3. Affected versionversion=* <=9.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Oracle Corporation · MySQL Serverversion=* <=8.0.39; version=* <=8.4.1; version=* <=9.0.1
Oracle Corporation · MySQL Clusterversion=* <=7.5.35; version=* <=7.6.31; version=* <=8.0.39; version=* <=8.4.2; version=* <=9.0.1

Published CVSS scores

5.3Oracle CorporationCVSS:3.1/AV:N/AC:H/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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