CVE-2025-21583Network attack vector

Authenticated denial of service via undisclosed DDL flaw

Published Apr 15, 2025 · Updated Apr 19, 2025

Denial of service in Oracle MySQL Server 8.4.0 and 9.0.0 allows remote authenticated users to hang or repeatedly crash the server. Oracle identifies the affected locus only as the Server DDL component and has not disclosed the malformed operation or input that triggers the failure. Exploitation requires high database privileges and network access, and the documented consequence is limited to service interruption.

CVSS severity4.9
Medium
EPSS probability0.84%
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 8.4.0 and 9.0.0 allows remote authenticated users to hang or repeatedly crash the server. Oracle identifies the affected locus only as the Server DDL component and has not disclosed the malformed operation or input that triggers the failure. Exploitation requires high database privileges and network access, and the documented consequence is limited to service interruption.

The record

CVE
CVE-2025-21583
Published
Apr 15, 2025
Updated
Apr 19, 2025
Vendor
Oracle Corporation
Product
MySQL Server
Classifications
CWE-732, T1499
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 19, 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=8.4.0
  2. Affected versionversion=9.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Oracle Corporation · MySQL Serverversion=8.4.0; version=9.0.0

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-732Incorrect Permission Assignment for Critical Resource
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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