CVE-2020-2511

Vulnerability in the Core RDBMS component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows low privileged attacker having Create Session privilege with network access via OracleNet to compromise Core RDBMS. While the vulnerability is in Core RDBMS, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Core RDBMS. CVSS 3.0 Base Score 7.7 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).

• https://www.oracle.com/security-alerts/cpujan2020.htmlPatch, Vendor Advisory
• https://www.oracle.com/security-alerts/cpujan2020.htmlPatch, Vendor Advisory

Published

Jan 15, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2020-25104eramba c2.8.1 and Enterprise before e2.19.3 allows XSS via a…5.4
• CVE-2020-25105eramba c2.8.1 and Enterprise before e2.19.3 has a weak passw…9.8
• CVE-2020-25106Nanosystems SupRemo 4.1.3.2348 allows attackers to obtain Lo…7.8
• CVE-2020-25107An issue was discovered in the DNS implementation in Ethernu…9.8
• CVE-2020-25108An issue was discovered in the DNS implementation in Ethernu…9.8
• CVE-2020-25109An issue was discovered in the DNS implementation in Ethernu…9.8
• CVE-2020-25110An issue was discovered in the DNS implementation in Ethernu…9.8
• CVE-2020-25111An issue was discovered in the IPv6 stack in Contiki through…9.8
• CVE-2020-25112An issue was discovered in the IPv6 stack in Contiki through…9.8
• CVE-2020-25115The Admin CP in vBulletin 5.6.3 allows XSS via an Occupation…4.8
• CVE-2020-25116The Admin CP in vBulletin 5.6.3 allows XSS via an Announceme…4.8
• CVE-2020-25117The Admin CP in vBulletin 5.6.3 allows XSS via a Junior Memb…4.8