CVE-2024-21176Network attack vector

Authenticated server hang and repeated crashes

Published Jul 16, 2024 · Updated Mar 25, 2025

Denial of service in Oracle MySQL Server 8.4.0 and earlier allows remote authenticated users to hang or repeatedly crash the server. Oracle identifies Server: Thread Pooling as the locus but has not published the malformed input or incorrect operation responsible. Exploitation requires low-privileged network access through a supported protocol and high attack complexity; the reported consequence is limited to service availability.

CVSS severity5.3
Medium
EPSS probability0.70%
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 8.4.0 and earlier allows remote authenticated users to hang or repeatedly crash the server. Oracle identifies Server: Thread Pooling as the locus but has not published the malformed input or incorrect operation responsible. Exploitation requires low-privileged network access through a supported protocol and high attack complexity; the reported consequence is limited to service availability.

The record

CVE
CVE-2024-21176
Published
Jul 16, 2024
Updated
Mar 25, 2025
Vendor
Oracle Corporation
Product
MySQL Server
Classifications
T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 16, 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=* <=8.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Oracle Corporation · MySQL Serverversion=* <=8.4.0

Published CVSS scores

5.3OracleCVSS: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.

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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

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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