CVE-2022-21608Network attack vector

Authenticated server hang or repeatable crash

Published Oct 18, 2022 · Updated Sep 24, 2024

Denial of service in Oracle MySQL Server 5.7.39 and earlier and 8.0.30 and earlier allows remote authenticated users to crash the server. Oracle identifies the Server Optimizer as the affected component but has not published the operation or input that triggers the failure. Exploitation requires a highly privileged account and network access through the MySQL protocol; successful attacks cause a hang or repeatedly reproducible crash, without reported data disclosure or modification.

CVSS severity4.9
Medium
EPSS probability1.47%
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

Denial of service in Oracle MySQL Server 5.7.39 and earlier and 8.0.30 and earlier allows remote authenticated users to crash the server. Oracle identifies the Server Optimizer as the affected component but has not published the operation or input that triggers the failure. Exploitation requires a highly privileged account and network access through the MySQL protocol; successful attacks cause a hang or repeatedly reproducible crash, without reported data disclosure or modification.

The record

CVE
CVE-2022-21608
Published
Oct 18, 2022
Updated
Sep 24, 2024
Vendor
Oracle Corporation
Product
MySQL Server
Classifications
T1499.004
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

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=5.7.39 and prior
  2. Affected versionversion=8.0.30 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Oracle Corporation · MySQL Serverversion=5.7.39 and prior; version=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.

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
Privilegesadmin
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

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