CVE-2024-20961Network attack vector

Authenticated server hang or repeatable crash

Published Jan 16, 2024 · Updated Jun 20, 2025

Optimizer denial of service in MySQL Server 8.0.35 and earlier and 8.2.0 and earlier allows remote authenticated users to hang or crash the server. Oracle identifies the Server: Optimizer component but has not disclosed the malformed query, optimizer operation, or resource-handling error that triggers the failure. A low-privileged account with network access over the MySQL Protocol is required, and the reported consequence is limited to a server hang or frequently repeatable crash.

CVSS severity6.5
Medium
EPSS probability1.10%
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

Optimizer denial of service in MySQL Server 8.0.35 and earlier and 8.2.0 and earlier allows remote authenticated users to hang or crash the server. Oracle identifies the Server: Optimizer component but has not disclosed the malformed query, optimizer operation, or resource-handling error that triggers the failure. A low-privileged account with network access over the MySQL Protocol is required, and the reported consequence is limited to a server hang or frequently repeatable crash.

The record

CVE
CVE-2024-20961
Published
Jan 16, 2024
Updated
Jun 20, 2025
Vendor
Oracle Corporation
Product
MySQL Server
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 20, 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=* <=8.0.35
  2. Affected versionversion=* <=8.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Oracle Corporation · MySQL Serverversion=* <=8.0.35; version=* <=8.2.0

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
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

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