Wiz
Vulnerability DatabaseCVE-2021-2387

CVE-2021-2387: 
MySQL vulnerability analysis and mitigation

Overview

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer) affecting versions 8.0.25 and prior. This vulnerability allows high privileged attackers with network access via multiple protocols to compromise MySQL Server (Oracle Advisory).

Technical details

The vulnerability has a CVSS 3.1 Base Score of 4.9 (Medium) with vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H. The vulnerability exists in the Optimizer component of MySQL Server and requires network access for exploitation (NVD).

Impact

Successful exploitation of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server (Oracle Advisory, NetApp Advisory).

Mitigation and workarounds

Oracle has released patches to address this vulnerability in MySQL version 8.0.26. Users are strongly recommended to update to this version or later. For systems that cannot be immediately updated, limiting network access to trusted users and implementing strong access controls is recommended (Oracle Advisory).

Additional resources

Source: This report was generated using AI

Related MySQL vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-53054MEDIUM5.5
  • MySQLMySQL
  • mysql:8.4::mecab-ipadic
NoYesOct 21, 2025
CVE-2025-53053MEDIUM5.5
  • MySQLMySQL
  • mecab-ipadic
NoYesOct 21, 2025
CVE-2025-53069MEDIUM4.9
  • MySQLMySQL
  • mysql:8.4::mysql-libs
NoYesOct 21, 2025
CVE-2025-53067MEDIUM4.9
  • MySQLMySQL
  • cpe:2.3:a:oracle:mysql_server
NoYesOct 21, 2025
CVE-2025-53062MEDIUM4.9
  • MySQLMySQL
  • mysql-server
NoYesOct 21, 2025

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Additional Wiz resources

Cloud Vulnerability DB

Cloud Vulnerability DB

A community-led vulnerabilities database

Cloud Threat Landscape

Cloud Threat Landscape

A threat intelligence database

PEACH

PEACH

A tenant isolation framework

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management
Get a demo