CVE-2026-71102
CriticalCVSS 9.1Summary
Vulnerability in Oracle Database Server Portable Clusterware component (versions 19.3-19.32, 21.3-21.23, 23.4.0-23.26.3). Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of data and cause a complete hang or frequently repeatable crash (complete DoS). CVSS 3.1 Base Score 9.1 (impact on integrity and availability).
Risk Assessment
An attacker can compromise data integrity and cause service unavailability, potentially leading to severe disruption of database operations. High CVSS score indicates critical risk.
Recommendation
Apply Oracle patches for affected versions. Restrict network access to Portable Clusterware and monitor for unusual activity.
Original NVD description (English source)
Vulnerability in the Portable Clusterware component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Portable Clusterware. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Portable Clusterware accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Portable Clusterware. CVSS 3.1 Base Score 9.1 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H).