CVE-2022-21637Network attack vector

Privileged denial of service via InnoDB

Published Oct 18, 2022 · Updated Sep 24, 2024

MySQL Server 8.0.30 and earlier allows remote authenticated users to cause a denial of service via the InnoDB component. The vulnerable InnoDB processing path mishandles network-supplied requests, allowing a high-privilege client to force a hang or repeatedly crash the server. Oracle has not published the precise failing operation; exploitation requires high database privileges and affects availability without reported confidentiality or integrity loss.

CVSS severity4.9
Medium
EPSS probability1.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

MySQL Server 8.0.30 and earlier allows remote authenticated users to cause a denial of service via the InnoDB component. The vulnerable InnoDB processing path mishandles network-supplied requests, allowing a high-privilege client to force a hang or repeatedly crash the server. Oracle has not published the precise failing operation; exploitation requires high database privileges and affects availability without reported confidentiality or integrity loss.

The record

CVE
CVE-2022-21637
Published
Oct 18, 2022
Updated
Sep 24, 2024
Vendor
Oracle Corporation
Product
MySQL Server
Classifications
CWE-400, T1499
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 18, 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

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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=8.0.30 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Oracle Corporation · MySQL Serverversion=8.0.30 and prior

Published CVSS scores

4.9Oracle CorporationCVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
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

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Your stack

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