CVE Database›CVE-2026-101679

CVE-2026-101679

mysql: mysql: Denial of Service via multiple protocols

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Severity

Important

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · October 21, 2026

Updated · October 31, 2026

Description

A flaw was found in the Client programs component of MySQL. This issue may allow an attacker to impact the confidentiality, integrity, and/or availability of MySQL Server depending on the vulnerability details. Refer to the Oracle CPU advisory for component-specific impact.

Statement

This vulnerability is rated as Important for Red Hat environments because unauthenticated remote attackers can induce a total denial of service against the MySQL server without requiring privileges or user interaction. While standard deployments usually restrict database listening ports to internal networks or localhost, exposed instances face complete service unavailability through process hangs or crashes. The lack of authentication prerequisites and severe impact on service availability warrant an Important rather than Moderate rating, though confidentiality and integrity remain unaffected.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

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

CWE-400 · Uncontrolled Resource Consumption