---
id: CVE-2026-101510
title: Vulnerability in the Oracle Net Services component of Oracle Database Server
summary: >-
  Vulnerability in the Oracle Net Services 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 high privileged
  attacker having N…
severity: medium
cvss: 4.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
vendor: Oracle Corporation
product: Oracle Net Services
affected:
  - oracle_net_services >= 19.3 <= 19.32
  - oracle_net_services >= 21.3 <= 21.23
  - oracle_net_services >= 23.4.0 <= 23.26.3
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T21:21:16.286Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-101510'
references:
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
    label: Oracle Advisory
tags:
  - cve.org
ingestedAt: '2026-10-20T22:23:34.000Z'
---

## Overview

Vulnerability in the Oracle Net Services 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 high privileged attacker having None privilege with logon to the infrastructure where Oracle Net Services executes 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 4.4 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

## Affected

- `oracle_net_services >= 19.3 <= 19.32`
- `oracle_net_services >= 21.3 <= 21.23`
- `oracle_net_services >= 23.4.0 <= 23.26.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.