CVE-2026-83350

HighCVSS 7.5/10Last modified Sep 16, 2026

Description

Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are 21.3-21.23 and 23.4.0-23.26.3. 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 ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-400

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
Oracle Corporation	Oracle Database Server	>= 21.3, <= 21.23; >= 23.4.0, <= 23.26.3

References

https://www.oracle.com/security-alerts/cspusep2026.html

Timeline

Published: Sep 15, 2026
Last modified: Sep 16, 2026
NVD status: Awaiting Analysis

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