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Vulnerabilities

Vulnerability · CVE-2025-21581

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).

Published Apr 15, 2025 · catalog updated Nov 3, 2025 · Oracle Corporation MySQL Server

Check this week

CVE-2025-21581 is not in CISA KEV. FIRST estimates a 87.00% chance of exploitation in the next 30 days. Check whether you run Oracle Corporation MySQL Server.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
87.00%
Remediation
Advisory link
Affected products
vendor Oracle Corporation MySQL Server 9.0.0 ≤9.2.0

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.41, 8.4.0-8.4.4 and 9.0.0-9.2.0. 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. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Oracle Corporation MySQL Server 9.0.0 ≤9.2.09.0.0 ≤9.2.0

How to fix CVE-2025-21581

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-21581 is not in CISA KEV. FIRST estimates a 87.00% chance of exploitation in the next 30 days. Check whether you run Oracle Corporation MySQL Server.

Which versions are affected?

Compare what you have installed with Oracle Corporation MySQL Server 9.0.0 ≤9.2.0 9.0.0 ≤9.2.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 87.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 15, 2025 · EUVD

    Detected

    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.41, 8.4.0-8.4.4 and 9.0.0-9.2.0. 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 han

  2. Nov 3, 2025 · EUVD

    Updated

    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.41, 8.4.0-8.4.4 and 9.0.0-9.2.0. 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 han

Sources

  • CVE.orgVulnerability recordCVE-2025-21581

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-11076

    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.41, 8.4.0-8.4.4 and 9.0.0-9.2.0. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocol

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.