SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2025-21501

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

MEDIUM 6.5EPSS 1.02%

Does this matter?

Lower severity and a low EPSS score (1.02%). Track it; it rarely justifies an emergency change on its own.

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and 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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

CVSS 3.1
6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
1.02% probability · 61th percentile
CISA KEV
Not listed
Weakness
CWE-770
Affected
oracle/mysql server
Source
secalert_us@oracle.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.