CVE-2026-46863Network attack vector

Unauthenticated hang or crash via connection handling

Published Jun 16, 2026 · Updated Jun 16, 2026

Denial of service in Oracle MySQL Server and MySQL Cluster allows remote attackers to hang or repeatedly crash database services. The Server Connection Handling component accepts malicious traffic over multiple protocols, but Oracle has not disclosed the specific faulty operation. Unauthenticated network access is sufficient; affected versions are MySQL Server 8.4.0 through 8.4.9 and 9.0.0 through 9.7.0, and MySQL Cluster 8.0.11 through 8.0.46, 8.4.0 through 8.4.9, and 9.0.0 through 9.7.0.

CVSS severity7.5
High
EPSS probability0.47%
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 and MySQL Cluster allows remote attackers to hang or repeatedly crash database services. The Server Connection Handling component accepts malicious traffic over multiple protocols, but Oracle has not disclosed the specific faulty operation. Unauthenticated network access is sufficient; affected versions are MySQL Server 8.4.0 through 8.4.9 and 9.0.0 through 9.7.0, and MySQL Cluster 8.0.11 through 8.0.46, 8.4.0 through 8.4.9, and 9.0.0 through 9.7.0.

The record

CVE
CVE-2026-46863
Published
Jun 16, 2026
Updated
Jun 16, 2026
Vendor
Oracle
Product
MySQL Cluster
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=8.0.11-8.0.46
  2. Affected versionversion=8.4.0-8.4.9
  3. Affected versionversion=9.0.0-9.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · MySQL Clusterversion=8.0.11-8.0.46; version=8.4.0-8.4.9; version=9.0.0-9.7.0
Oracle · MySQL Serverversion=8.4.0-8.4.9; version=9.0.0-9.7.0

Published CVSS scores

7.5OracleCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
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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