CVE-2025-21566 — Incorrect Permission Assignment in Corporation Mysql Server

CWE-732 — Incorrect Permission AssignmentCWE-404 — Improper Resource Shutdown or Release7 documents7 sources
Severity
6.5MEDIUMNVD
EPSS
0.2%
top 56.95%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Oracle Corporation Mysql ServerOracle Mysql Server
Timeline
PublishedJan 21

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 9.1.0 and prior. 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 vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages2 packages

▶NVDoracle/mysql_server9.0.0 — 9.1.0
▶CVEListV5oracle_corporation/mysql_server* — 9.1.0

🔴Vulnerability Details

3
OSV
CVE-2025-21566: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer)↗2025-01-21
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GHSA
GHSA-4x4h-rvfw-x95m: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer)↗2025-01-21
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CVEList
CVE-2025-21566: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer)↗2025-01-21
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📋Vendor Advisories

3
Red Hat
mysql: Denial of Service Vulnerability in MySQL Server Optimizer↗2025-01-21
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Oracle
Oracle Oracle MySQL Risk Matrix: Server: Optimizer — CVE-2025-21566↗2025-01-15
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Debian
CVE-2025-21566: mysql-8.0 - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Op...↗2025
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CVE-2025-21566 — Incorrect Permission Assignment | cvebase