Percona Server Critical Update CVE-2016-6662

CVE-2016-6662This blog is an announcement for a Percona Server update with regards to CVE-2016-6662.

We have added a fix for CVE-2016-6662 in the following releases:


An independent research has revealed multiple severe MySQL vulnerabilities. This advisory focuses on a critical vulnerability with a CVEID of CVE-2016-6662. The vulnerability affects MySQL servers in all version branches (5.7, 5.6, and 5.5) including the latest versions, and could be exploited by both local and remote attackers.

Both the authenticated access to MySQL database (via network connection or web interfaces such as phpMyAdmin) and SQL Injection could be used as exploitation vectors. Successful exploitation could allow attackers to execute arbitrary code with root privileges which would then allow them to fully compromise the server on which an affected version of MySQL is running.

This is a CRITICAL update, and the fix mitigates the potential for remote root code execution.

We encourage our users to update to the latest version of their particular fork as soon as possible, ensuring they have appropriate change management procedures in place beforehand so they can test the update before placing it into production.

Percona would like to thank Dawid Golunski of for disclosing this vulnerability in the MySQL software, and working with us to resolve this problem.

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Comments (17)

  • scaarup

    What about the Percona-XtraDB-Cluster package?

    September 12, 2016 at 2:03 pm
  • Remco

    Just curious if Percona XtraDB Cluster is also affected… And when to expect patches, if yes.

    September 12, 2016 at 2:05 pm
  • keshav

    As confirmed by percona in mail to users, For that release will come next week.

    September 14, 2016 at 2:31 am
  • anu

    What about those who were already on percona 5.7.14 7 before this Announcement .Was earlier Binary already patched or need to re download latest binaries.

    September 14, 2016 at 6:31 am
  • Mike Waddle

    We ran into memory issues after going from 5.6.23 to this patch. Suspect a memory leak.

    September 19, 2016 at 9:54 pm
  • kastauyra

    Anyone affected by this memory leak – are you using the audit log plugin?

    September 22, 2016 at 1:52 am
  • ram

    Anybody is using the audit log plugin?

    October 14, 2016 at 6:28 am
  • Yusuf

    The link for “Percona Server 5.6.32-78.1” is not correct!

    July 23, 2018 at 9:18 am

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