PT-2026-62201 · Oracle · Oracle Net Services

CVE-2026-47040 · Published 2026-07-21 · Updated 2026-07-21

Mitre

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are 19.3-19.31, 21.3-21.22 and 23.4.0-23.26.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 9.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).

Fix

Related Identifiers

CVE-2026-47040

Affected Products

Oracle Net Services

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-47040 · Security Note
• https://oracle.com/security-alerts/cpujul2026.html · Vendor Advisory