CVE-2025-30751: 
Oracle Database Server vulnerability analysis and mitigation

A critical vulnerability (CVE-2025-30751) was discovered in the Oracle Database component of Oracle Database Server, affecting versions 19.27 and 23.4-23.8. The vulnerability was disclosed on July 15, 2025, and is classified as easily exploitable. It allows low-privileged attackers with Create Session and Create Procedure privileges to potentially compromise the Oracle Database through network access via Oracle Net (Oracle CPU, NVD).

The vulnerability has been assigned a CVSS 3.1 Base Score of 8.8 (High severity) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. This indicates network vector access, low attack complexity, low privileges required, no user interaction needed, unchanged scope, and high impact on confidentiality, integrity, and availability. The vulnerability is associated with CWE-863 (Incorrect Authorization) (Oracle CPU, NVD).

Successful exploitation of this vulnerability can result in complete takeover of the Oracle Database. The high CVSS score indicates severe potential impacts on confidentiality, integrity, and availability of the system, potentially allowing attackers to gain unauthorized access to critical data, modify database contents, and disrupt database operations (Oracle CPU).

Oracle has released security patches as part of the July 2025 Critical Patch Update. Organizations are strongly advised to apply these patches without delay to affected versions (19.27 and 23.4-23.8). Oracle emphasizes the importance of remaining on actively-supported versions and applying Critical Patch Update security patches promptly to prevent potential exploitation (Oracle CPU).