$ cve CVE-2016-6663 JSON

CVE-2016-6663 EXPLOIT

7.0

HIGH · CVSS 3.0 · EPSS 4.3% (pctl 91)

Patch early

A public exploit exists.

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.

Scoring

CVSS	7.0 (HIGH, v3.0)
Vector	CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS	4.31% — more likely to be exploited than 91% of all CVEs
Weakness	CWE-362
On CISA KEV	no
Public exploit	yes
Published	2016-12-13
Last modified	2026-06-17

Affected (4)

Vendor	Product
mariadb	mariadb
oracle	mysql
percona	percona server
percona	xtradb cluster

Public exploits

Source	Title	Date
exploit-db	MySQL / MariaDB / PerconaDB 5.5.x/5.6.x/5.7.x - 'mysql' System User Privilege Escalation / Race Condition	2016-11-01

References

→ the Explorer · watch your stack · NVD