What is CVE-2025-50091?

CVE-2025-50091 is a medium-severity vulnerability in Oracle Mysql, classified under Uncontrolled Resource Consumption. CVSS score: 4.9/10. Published 2025-07-15.

How severe is CVE-2025-50091?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Resource exhaustion in Oracle Mysql

CVE-2025-50091

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.42, 8.4.0-8.4.5 and 9.0.0-9.3.0. 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).

Vulnerability class: DoS (Denial of Service)

EPSS: 0.006 (43.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

Affected products

Oracle Mysql
Oracle Corporation Mysql Server — versions 8.0.0, 8.4.0, 9.0.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

secalert_us@oracle.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2025-50091?: CVE-2025-50091 is a medium-severity vulnerability in Oracle Mysql, classified under Uncontrolled Resource Consumption. CVSS score: 4.9/10. Published 2025-07-15.
How severe is CVE-2025-50091?: Medium severity. CVSS v3 base score is 4.9 out of 10.