CVE-2024-21134Network attack vector

Authenticated partial service interruption

Published Jul 16, 2024 · Updated Nov 4, 2025

Denial of service in Oracle MySQL Server 8.0.37 and earlier or 8.4.0 and earlier allows remote authenticated users to partially interrupt service. Oracle has not disclosed the malformed input or incorrect operation within the Server Connection Handling component that triggers the availability loss. A low-privileged account and network access over the MySQL protocol are required, and the reported consequence is limited to a partial service interruption.

CVSS severity4.3
Medium
EPSS probability0.78%
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 8.0.37 and earlier or 8.4.0 and earlier allows remote authenticated users to partially interrupt service. Oracle has not disclosed the malformed input or incorrect operation within the Server Connection Handling component that triggers the availability loss. A low-privileged account and network access over the MySQL protocol are required, and the reported consequence is limited to a partial service interruption.

The record

CVE
CVE-2024-21134
Published
Jul 16, 2024
Updated
Nov 4, 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. 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 Corporation · MySQL Serverversion=* <=8.0.37; version=* <=8.4.0

Published CVSS scores

4.3OracleCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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.

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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