Denial of Service Vulnerability in MySQL Server by Oracle
CVE-2026-21950

6.5MEDIUM

Key Information:

Vendor

Oracle
Status
Mysql Server
Vendor
CVE Published:
20 January 2026

What is CVE-2026-21950?

A vulnerability exists in the Oracle MySQL Server that allows an attacker with low privileges and network access to exploit the product via multiple protocols. This issue can lead to a denial-of-service condition, where the MySQL Server may hang or crash repeatedly. Affected versions are from 9.0.0 to 9.5.0. Organizations using these versions should prioritize security measures to mitigate potential attacks and ensure system availability.

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Affected Version(s)

MySQL Server 9.0.0 <= 9.5.0

References

https://www.oracle.com/security-alerts/cpujan2026.html
vendor-advisory

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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