CVE-2024-21163Network attack vector

Crash and data modification via undisclosed optimizer flaw

Published Jul 16, 2024 · Updated Nov 4, 2025

Resource-consumption flaw in the optimizer of Oracle MySQL Server 8.0.37 and earlier and 8.4.0 allows remote authenticated users to crash the server. Oracle has not disclosed the optimizer operation or input that consumes resources or permits unauthorized updates, inserts, or deletes. Exploitation requires a highly privileged MySQL account with network access and can hang or repeatedly crash the server or alter some accessible data.

CVSS severity5.5
Medium
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Resource-consumption flaw in the optimizer of Oracle MySQL Server 8.0.37 and earlier and 8.4.0 allows remote authenticated users to crash the server. Oracle has not disclosed the optimizer operation or input that consumes resources or permits unauthorized updates, inserts, or deletes. Exploitation requires a highly privileged MySQL account with network access and can hang or repeatedly crash the server or alter some accessible data.

The record

CVE
CVE-2024-21163
Published
Jul 16, 2024
Updated
Nov 4, 2025
Vendor
Oracle Corporation
Product
MySQL Server
Classifications
CWE-400, T1499, T1565
Attack vector
network
Privileges
admin

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

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 privilegesadmin

What is affected?

Oracle Corporation · MySQL Serverversion=* <=8.0.37; version=* <=8.4.0

Published CVSS scores

5.5OracleCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/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

CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service
T1565Data Manipulation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo