What is CVE-2016-0657?

CVE-2016-0657 is a medium-severity vulnerability in Oracle MySQL. CVSS score: 5.5/10. Published 2016-04-21.

How severe is CVE-2016-0657?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Oracle MySQL

CVE-2016-0657

Unspecified vulnerability in Oracle MySQL 5.7.11 and earlier allows local users to affect confidentiality via vectors related to JSON.

Published 2016-04-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (60.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Oracle MySQL

References

www.securitytracker.com/id/1035606 (vdb-entry)
www.ubuntu.com/usn/USN-2954-1 (vendor-advisory)
www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2016-0657?: CVE-2016-0657 is a medium-severity vulnerability in Oracle MySQL. CVSS score: 5.5/10. Published 2016-04-21.
How severe is CVE-2016-0657?: Medium severity. CVSS v3 base score is 5.5 out of 10.