Medium4.4Red Hat Linux

Medium [CVE-2026-47012] Optimizer unspecified vulnerability (CPU Jul 2026)

This medium-severity Red Hat Linux advisory covers CVE-2026-47012 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.

CVE-2026-47012 Published Jul 21, 2026Updated by vendor Jul 21, 2026

CVE-2026-47012

Affected products & platforms

Red Hat LinuxRed Hat Enterprise Linux

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Summary

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are MySQL Server: 8.4.0-8.4.10, 9.7.0-9.7.1; MySQL Cluster: 8.0.0-8.0.47, 8.4.0-8.4.10 and 9.7.0-9.7.1.

Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster.

CVSS 3.1 Base Score 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).

Red Hat Product Security rates the severity of this flaw as determined by the Oracle MySQL Critical Patch Update. Red Hat severity: Moderate — CVSS 4.4 (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).

Weakness: CWE-617. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.

Red Hat fixing advisory: RHSA-2026:56007, RHSA-2026:56936, RHSA-2026:56973.

Affected products named by the advisory: Red Hat package: mysql8.4.

Affected versions

8.4.0-8
4.10
9.7.0-9

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Fixed versions

mysql8.4-0:8.4.11-1.el10_2
mysql:8.4-8100020260812072430.489197e6
mysql:8.4-9080020260812072812.rhel9
RHSA-2026:56007
RHSA-2026:56936
RHSA-2026:56973

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Mitigation

Upgrade to a fixed release: mysql8.4-0:8.4.11-1.el10_2, mysql:8.4-8100020260812072430.489197e6, mysql:8.4-9080020260812072812.rhel9, RHSA-2026:56007, RHSA-2026:56936, RHSA-2026:56973. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Discussion(0)

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