Resource exhaustion in Oracle MySQL Server
CVE-2025-21493
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges). Supported versions that are affected are 8.4.3 and prior and 9.1.0 and prior. Difficult to exploit 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).
EPSS: 0.008 (53.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
References
- secalert_us@oracle.com (vendor-advisory, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-21493?
- CVE-2025-21493 is a medium-severity vulnerability in Oracle MySQL Server, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 4.4/10. Published 2025-01-21.
- How severe is CVE-2025-21493?
- Medium severity. CVSS v3 base score is 4.4 out of 10.