What is CVE-2016-5443?

CVE-2016-5443 is a medium-severity vulnerability in Oracle MySQL. CVSS score: 4.7/10. Published 2016-07-21.

How severe is CVE-2016-5443?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Vulnerability in Oracle MySQL

CVE-2016-5443

Unspecified vulnerability in Oracle MySQL 5.7.12 and earlier allows local users to affect availability via vectors related to Server: Connection.

Published 2016-07-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (33.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Oracle MySQL

References

www.ubuntu.com/usn/USN-3040-1 (vendor-advisory)
www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html (Patch, Vendor Advisory)
www.securityfocus.com/bid/91963 (vdb-entry)
www.securitytracker.com/id/1036362 (vdb-entry)
www.securityfocus.com/bid/91787 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2016-5443?: CVE-2016-5443 is a medium-severity vulnerability in Oracle MySQL. CVSS score: 4.7/10. Published 2016-07-21.
How severe is CVE-2016-5443?: Medium severity. CVSS v3 base score is 4.7 out of 10.