CVE-2023-22028Network attack vector

Authenticated server hang or repeatable crash

Published Oct 17, 2023 · Updated Feb 13, 2025

Denial of service in Oracle MySQL Server 5.7.43 and earlier and 8.0.31 and earlier allows remote authenticated users to hang or crash the server. Oracle identifies Server: Optimizer as the affected component but has not published the input, operation, or optimizer code path that triggers the failure. Exploitation requires a high-privileged MySQL account with network access and disrupts availability without reported data disclosure or modification.

CVSS severity4.9
Medium
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Oracle MySQL Server 5.7.43 and earlier and 8.0.31 and earlier allows remote authenticated users to hang or crash the server. Oracle identifies Server: Optimizer as the affected component but has not published the input, operation, or optimizer code path that triggers the failure. Exploitation requires a high-privileged MySQL account with network access and disrupts availability without reported data disclosure or modification.

The record

CVE
CVE-2023-22028
Published
Oct 17, 2023
Updated
Feb 13, 2025
Vendor
Oracle Corporation
Product
MySQL Server
Classifications
T1499
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=* <=5.7.43
  2. Affected versionversion=* <=8.0.31

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Oracle Corporation · MySQL Serverversion=* <=5.7.43; version=* <=8.0.31

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 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

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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