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VulnerabilityPublished Updated

CVE-2024-21163: Oracle MySQL Server · Uncontrolled Resource Consumption

Affects Oracle MySQL ServerSource CVE Database V5

0

Not known to be exploited · CVSS 5.5 Medium : upgrade to 8.4.1 or 8.0.38 when convenient.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 54% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 8.4.1, 8.0.38
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Jul 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade com.oracle/mysql-server to 8.4.1 or 8.0.38.

Affected software

ProductAffectedFixed in
Mavencom.oracle/mysql-serverpkg:maven/com.oracle/mysql-serverOther threatsAffected
  • <8.0.38
  • <8.4.1
Fixed in
  • 8.0.38
  • 8.4.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations should immediately verify their MySQL Server versions and prioritize upgrading to patched versions once available from Oracle. If you cannot patch yet, organizations should restrict network access to MySQL servers, limiting exposure to trusted hosts and protocols only. Implement strict access controls and monitoring to detect and prevent unauthorized privilege escalation that could enable exploitation. Employ network segmentation to isolate database servers from less trusted network zones. Regularly audit database user privileges to ensure the principle of least privilege is enforced. Enable and monitor MySQL logging to detect unusual update, insert, or delete operations indicative of exploitation attempts. Consider deploying Web Application Firewalls (WAFs) or Intrusion Detection/Prevention Systems (IDS/IPS) with signatures targeting suspicious MySQL traffic patterns. Finally, maintain an incident response plan tailored to database compromise scenarios to minimize downtime and data loss in case of an attack.

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.37 and prior and 8.4.0 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 ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

References

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