CVE-2025-50079Network attack vector

Privileged service interruption via undisclosed optimizer flaw

Published Jul 15, 2025 · Updated Jul 16, 2025

Denial of service in Oracle MySQL Server through 9.3.0 allows remote authenticated users to hang or repeatedly crash the database server. Affected branches are 8.0.0 through 8.0.42, 8.4.0 through 8.4.5, and 9.0.0 through 9.3.0; Oracle has not disclosed the faulty Optimizer operation or triggering input. Exploitation requires a high-privileged account with MySQL Protocol network access, and the reported consequence is service interruption only.

CVSS severity4.9
Medium
EPSS probability0.56%
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 through 9.3.0 allows remote authenticated users to hang or repeatedly crash the database server. Affected branches are 8.0.0 through 8.0.42, 8.4.0 through 8.4.5, and 9.0.0 through 9.3.0; Oracle has not disclosed the faulty Optimizer operation or triggering input. Exploitation requires a high-privileged account with MySQL Protocol network access, and the reported consequence is service interruption only.

The record

CVE
CVE-2025-50079
Published
Jul 15, 2025
Updated
Jul 16, 2025
Vendor
Oracle Corporation
Product
MySQL Server
Classifications
T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 16, 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=8.0.0 <=8.0.42
  2. Affected versionversion=8.4.0 <=8.4.5
  3. Affected versionversion=9.0.0 <=9.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Oracle Corporation · MySQL Serverversion=8.0.0 <=8.0.42; version=8.4.0 <=8.4.5; version=9.0.0 <=9.3.0

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

T1499.004Application or System Exploitation

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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