Is CVE-2016-6663 actively exploited?

CVE-2016-6663 has no public evidence of in-the-wild exploitation as of 2025-04-12.

What is the CVSS score for CVE-2016-6663?

CVE-2016-6663 has a CVSS score of 7 (HIGH severity). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2016-6663?

Patch guidance is available from oracle security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2016-6663.

Fix CVE-2016-6663 - HIGH oracle mysql

Q: Which products are affected by CVE-2016-6663?

13 products: oracle mysql, oracle mysql, oracle mysql, percona percona server, percona percona server, and 8 more.

Description

Race condition in Oracle MySQL before 5.5.52, 5.6.x before 5.6.33, 5.7.x before 5.7.15, and 8.x before 8.0.1; MariaDB before 5.5.52, 10.0.x before 10.0.28, and 10.1.x before 10.1.18; Percona Server before 5.5.51-38.2, 5.6.x before 5.6.32-78-1, and 5.7.x before 5.7.14-8; and Percona XtraDB Cluster before 5.5.41-37.0, 5.6.x before 5.6.32-25.17, and 5.7.x before 5.7.14-26.17 allows local users with certain permissions to gain privileges by leveraging use of my_copystat by REPAIR TABLE to repair a MyISAM table.

CVSS Metrics

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: high
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-362 · Race Condition

Metadata

Primary Vendor: ORACLE
Published: 12/13/2016
Last Modified: 4/12/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

oracle : mysqloracle : mysqloracle : mysqlpercona : percona_serverpercona : percona_serverpercona : percona_serverpercona : xtradb_clusterpercona : xtradb_clusterpercona : xtradb_clustermariadb : mariadbmariadb : mariadbmariadb : mariadboracle : mysql

Remediation Guidance

Executive Summary

Cite this page

CVE-2016-6663. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2016-6663

View on NIST NVD

CVE-2016-6663 vulnerability