RDBMS Listener Vulnerability in Oracle Database Server
CVE-2025-30733
What is CVE-2025-30733?
A vulnerability exists within the RDBMS Listener component of Oracle Database Server that can be exploited by an unauthenticated attacker with network access to the Oracle Net. This vulnerability allows attackers to initiate actions on the RDBMS Listener, potentially leading to unauthorized access to sensitive data. Successful exploitation requires interaction from another user, which presents a unique challenge for mitigation. Users are advised to apply the latest security updates to counteract this vulnerability and safeguard their data.
Affected Version(s)
Oracle Database Server 19.3 <= 19.26
Oracle Database Server 21.3 <= 21.17
Oracle Database Server 23.4 <= 23.7
News Articles

Oracle TNS Flaw Exposes System Memory to Unauthorized Access
Oracle has addressed a significant security flaw in its Transparent Network Substrate (TNS) protocol, used for database communications, with the release of a patch on April 15, 2025. The vulnerability, tracked as CVE-2025-30733, could allow unauthenticated remote attackers to access sensitive system...