What is CVE-2018-2645?

CVE-2018-2645 is a medium-severity vulnerability in Oracle MySQL. CVSS score: 4.9/10. Published 2018-01-18.

How severe is CVE-2018-2645?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Is CVE-2018-2645 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Oracle MySQL

CVE-2018-2645

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Performance Schema). Supported versions that are affected are 5.6.38 and prior and 5.7.20 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data. CVSS 3.0 Base Score 4.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N).

Published 2018-01-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.025 (84.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.025 · change: +0.001

Affected products

Oracle MySQL
Oracle Corporation MySQL Server — versions 5.6.38 and prior, 5.7.20 and prior

Public proof-of-concept exploits

andir/nixos-issue-db-example

References

access.redhat.com/errata/RHSA-2018:0587 (vendor-advisory)
usn.ubuntu.com/3537-1/ (vendor-advisory)
access.redhat.com/errata/RHSA-2018:0586 (vendor-advisory)
www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html (Patch, Vendor Advisory)
www.securityfocus.com/bid/102698 (VDB Entry, Third Party Advisory, vdb-entry)
security.netapp.com/advisory/ntap-20180117-0002/ (Third Party Advisory)
www.securitytracker.com/id/1040216 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-2645?: CVE-2018-2645 is a medium-severity vulnerability in Oracle MySQL. CVSS score: 4.9/10. Published 2018-01-18.
How severe is CVE-2018-2645?: Medium severity. CVSS v3 base score is 4.9 out of 10.
Is CVE-2018-2645 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.