CVE-2026-21950
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2026-01-20

Last updated on: 2026-01-29

Assigner: Oracle

Description
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 9.0.0-9.5.0. Easily exploitable vulnerability allows low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-01-20
Last Modified
2026-01-29
Generated
2026-05-07
AI Q&A
2026-01-21
EPSS Evaluated
2026-05-05
NVD
CVE-2026-21950
EUVD
EUVD-2026-3559
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
oracle mysql_server From 9.0.0 (inc) to 9.5.0 (inc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability exists in the MySQL Server product of Oracle MySQL, specifically in the Server Optimizer component. It affects versions 9.0.0 through 9.5.0. A low privileged attacker with network access via multiple protocols can exploit this vulnerability to cause the MySQL Server to hang or crash repeatedly, resulting in a denial of service (DoS).


How can this vulnerability impact me? :

The vulnerability can allow an attacker to cause a denial of service by making the MySQL Server hang or crash repeatedly. This disrupts availability of the database service, potentially impacting applications and users relying on the MySQL Server.


Ask Our AI Assistant
Need more information? Ask your question to get an AI reply (Powered by our expertise)
0/70
EPSS Chart