Vulnerability in Oracle Corporation Oracle Database Server

[ Description ]Official description

Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.3. Easily exploitable vulnerability allows low privileged attacker having Create Session privilege with network access via Oracle Net to compromise RDBMS. While the vulnerability is in RDBMS, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all RDBMS accessible data. CVSS 3.1 Base Score 7.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N).

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• CERT-FR21 Oct 2026CERTFR-2026-AVI-1349

  Multiple vulnerabilities in Oracle Database Server Translated from French

  Multiple vulnerabilities have been discovered in Oracle Database Server. Some of them allow an attacker to cause remote arbitrary code execution, remote denial of service and a breach of data confidentiality.

  CVE-2026-91499CVE-2026-93565CVE-2026-93494+41 more CVEs
• BSI CERT-Bund20 Oct 2026WID-SEC-2026-4061

  Oracle Database Server: Multiple vulnerabilities Translated from German

  CVE-2026-91615CVE-2026-59889CVE-2026-101510+10 more CVEs

[ References ]References

• www.oracle.com/security-alerts/cpuoct2026.html