CVE-2016-6663

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

4.31% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 90.5% of scored records. A rank, not a probability.

NVD base score

7.0 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2016-12-13 21:00Z9 YR AGO

Last updated

2024-08-06 01:36Z2 YR AGO

Reserved

2016-08-10

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class

Data version

5.1

Document digest

85b8ff7cdf755e5cec74067b1deccdadd538a267e6613aa0c927b3c1c4fdb9e9

• rhn.redhat.comRHSA-2016:2749http://rhn.redhat.com/errata/RHSA-2016-2749.htmlvendor-advisoryx_refsource_REDHAT
• dev.mysql.comhttps://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-52.htmlx_refsource_CONFIRM
• rhn.redhat.comRHSA-2017:0184http://rhn.redhat.com/errata/RHSA-2017-0184.htmlvendor-advisoryx_refsource_REDHAT
• seclists.org20161101 MySQL / MariaDB / PerconaDB - Privilege Escalation / Race Condition Exploit [CVE-2016-6663 / OCVE-2016-5616]http://seclists.org/fulldisclosure/2016/Nov/4mailing-listx_refsource_FULLDISC
• rhn.redhat.comRHSA-2016:2131http://rhn.redhat.com/errata/RHSA-2016-2131.htmlvendor-advisoryx_refsource_REDHAT
• github.comhttps://github.com/mysql/mysql-server/commit/4e5473862e6852b0f3802b0cd0c6fa10b5253291x_refsource_CONFIRM
• mariadb.comhttps://mariadb.com/kb/en/mariadb/mariadb-5552-release-notes/x_refsource_CONFIRM
• www.percona.comhttps://www.percona.com/blog/2016/11/02/percona-responds-to-cve-2016-6663-and-cve-2016-6664/x_refsource_CONFIRM
• www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlx_refsource_CONFIRM
• www.exploit-db.com40678https://www.exploit-db.com/exploits/40678/exploitx_refsource_EXPLOIT-DB
• rhn.redhat.comRHSA-2016:2130http://rhn.redhat.com/errata/RHSA-2016-2130.htmlvendor-advisoryx_refsource_REDHAT
• rhn.redhat.comRHSA-2016:2927http://rhn.redhat.com/errata/RHSA-2016-2927.htmlvendor-advisoryx_refsource_REDHAT
• www.openwall.com[oss-security] 20161025 Re: CVE-2016-6662 - MySQL Remote Root Code Execution / Privilege Escalation ( 0day )http://www.openwall.com/lists/oss-security/2016/10/25/4mailing-listx_refsource_MLIST
• dev.mysql.comhttps://dev.mysql.com/doc/relnotes/mysql/5.6/en/news-5-6-33.htmlx_refsource_CONFIRM
• www.securityfocus.com92911http://www.securityfocus.com/bid/92911vdb-entryx_refsource_BID
• www.securityfocus.com93614http://www.securityfocus.com/bid/93614vdb-entryx_refsource_BID
• rhn.redhat.comRHSA-2016:2595http://rhn.redhat.com/errata/RHSA-2016-2595.htmlvendor-advisoryx_refsource_REDHAT
• dev.mysql.comhttps://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-1.htmlx_refsource_CONFIRM
• mariadb.comhttps://mariadb.com/kb/en/mariadb/mariadb-10118-release-notes/x_refsource_CONFIRM
• dev.mysql.comhttps://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-15.htmlx_refsource_CONFIRM
• github.comhttps://github.com/MariaDB/server/commit/347eeefbfc658c8531878218487d729f4e020805x_refsource_CONFIRM
• rhn.redhat.comRHSA-2016:2928http://rhn.redhat.com/errata/RHSA-2016-2928.htmlvendor-advisoryx_refsource_REDHAT
• mariadb.comhttps://mariadb.com/kb/en/mariadb/mariadb-10028-release-notes/x_refsource_CONFIRM
• legalhackers.comhttps://legalhackers.com/advisories/MySQL-Maria-Percona-PrivEscRace-CVE-2016-6663-5616-Exploit.htmlx_refsource_MISC