CVE-2022-21509Network attack vector

Authenticated data modification and service interruption

Published Jul 19, 2022 · Updated Sep 24, 2024

Optimizer vulnerability in Oracle MySQL Server 8.0.29 and earlier allows remote authenticated users to alter data or interrupt service. Oracle has not disclosed the optimizer operation or crafted input that triggers the flaw. Exploitation requires a highly privileged MySQL account with protocol access and can update, insert, or delete some accessible data or hang or repeatedly crash the server.

CVSS severity5.5
Medium
EPSS probability1.60%
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 vulnerability in Oracle MySQL Server 8.0.29 and earlier allows remote authenticated users to alter data or interrupt service. Oracle has not disclosed the optimizer operation or crafted input that triggers the flaw. Exploitation requires a highly privileged MySQL account with protocol access and can update, insert, or delete some accessible data or hang or repeatedly crash the server.

The record

CVE
CVE-2022-21509
Published
Jul 19, 2022
Updated
Sep 24, 2024
Vendor
Oracle Corporation
Product
MySQL Server
Classifications
T1565, T1499
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2024Record 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=8.0.29 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Oracle Corporation · MySQL Serverversion=8.0.29 and prior

Published CVSS scores

5.5Oracle CorporationCVSS: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

T1565Data Manipulation
T1499Endpoint Denial of Service

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