CVE-2021-35633
MySQL vulnerability analysis and mitigation

Overview

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Logging). Supported versions that are affected are 8.0.26 and prior. This is an easily exploitable vulnerability that allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. The vulnerability was disclosed in October 2021 (Oracle CPU).

Technical details

The vulnerability has been assigned a CVSS 3.1 Base Score of 2.7 (LOW) with the vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L. The attack vector is network-based (AV:N), with low attack complexity (AC:L), requiring high privileges (PR:H), no user interaction (UI:N), with unchanged scope (S:U), and no impact on confidentiality (C:N) or integrity (I:N), but low impact on availability (A:L) (NetApp Advisory).

Impact

Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Server (Oracle CPU).

Mitigation and workarounds

Oracle has released patches for this vulnerability as part of the October 2021 Critical Patch Update. Users should update to the latest version of MySQL Server. For systems that cannot be immediately updated, network access controls should be implemented to restrict access to trusted sources (Oracle CPU).

Additional resources


SourceThis 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
  • cpe:2.3:a:oracle:mysql_server
NoYesOct 21, 2025
CVE-2025-53053MEDIUM5.5
  • MySQLMySQL
  • cpe:2.3:a:oracle:mysql_server
NoYesOct 21, 2025
CVE-2025-53069MEDIUM4.9
  • MySQLMySQL
  • 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:8.0::mysql
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

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