{"id":"CVE-2025-53042","title":"Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer)","summary":"Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported versions that are affected are 8.0.0-8.0.43, 8.4.0-8.4.6 and  9.0.0-9.4.0. Easily exploitable vulnerability allows high privileged attac…","severity":"medium","cvss":4.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400"],"vendor":"oracle","product":"mysql_server","affected":["mysql_server >= 8.0.0, <= 8.0.43","mysql_server >= 8.4.0, <= 8.4.6","mysql_server >= 9.0.0, <= 9.4.0"],"published":"2025-10-21","updated":"2026-09-30","sourceUpdated":"2026-09-30T23:10:00.237","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-53042","references":[{"url":"https://www.oracle.com/security-alerts/cpuoct2025.html","label":"secalert_us@oracle.com"}],"tags":["nvd"],"epss":0.0058,"epssPercentile":0.45596,"ingestedAt":"2026-09-30T23:29:32.438Z","slug":"CVE-2025-53042","body":"## Overview\n\nVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported versions that are affected are 8.0.0-8.0.43, 8.4.0-8.4.6 and  9.0.0-9.4.0. 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).\n\n## Affected\n\n- `mysql_server >= 8.0.0, <= 8.0.43`\n- `mysql_server >= 8.4.0, <= 8.4.6`\n- `mysql_server >= 9.0.0, <= 9.4.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":27,"depthScoreParts":{"impact":27,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}