CVE-2024-21177Network attack vector

Authenticated hang or crash via undisclosed flaw

Published Jul 16, 2024 · Updated Nov 4, 2025

Denial of service in Oracle MySQL Server and MySQL NDB Cluster allows remote authenticated users to hang or repeatedly crash them. Oracle locates the Server flaw in the optimizer and the Cluster flaw in its general component, but has not published the input or wrong operation that exhausts resources. Low-privileged network access is required; affected releases include Server 8.0.37 and 8.4.0 and earlier and Cluster 7.5.34, 7.6.30, 8.0.37, and 8.4.0 and earlier.

CVSS severity6.5
Medium
EPSS probability0.76%
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 hang or repeatedly crash them. Oracle locates the Server flaw in the optimizer and the Cluster flaw in its general component, but has not published the input or wrong operation that exhausts resources. Low-privileged network access is required; affected releases include Server 8.0.37 and 8.4.0 and earlier and Cluster 7.5.34, 7.6.30, 8.0.37, and 8.4.0 and earlier.

The record

CVE
CVE-2024-21177
Published
Jul 16, 2024
Updated
Nov 4, 2025
Vendor
Oracle
Product
MySQL Server
Classifications
CWE-400, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 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=* <=8.0.37
  2. Affected versionversion=* <=8.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Oracle · MySQL Serverversion=* <=8.0.37; version=* <=8.4.0
Oracle · MySQL NDB Clusterversion=* <=7.5.34; version=* <=7.6.30; version=* <=8.0.37; version=* <=8.4.0

Published CVSS scores

6.5OracleCVSS:3.1/AV:N/AC:L/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

CWE-400Uncontrolled Resource Consumption
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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