---
id: CVE-2026-91209
title: >-
  Vulnerability in the Oracle Solaris product of Oracle Systems (component: X
  Window System)
summary: >-
  Vulnerability in the Oracle Solaris product of Oracle Systems (component: X
  Window System).   The supported version that is affected is 11.4. Difficult to
  exploit vulnerability allows low privileged attacker with logon to the
  infrastruct…
severity: medium
cvss: 4.2
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L'
cvssSource: cna
vendor: Oracle Corporation
product: Oracle Solaris
affected:
  - oracle_solaris 11.4
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T21:24:38.805Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-91209'
references:
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
    label: Oracle Advisory
tags:
  - cve.org
ingestedAt: '2026-10-20T22:23:33.834Z'
---

## Overview

Vulnerability in the Oracle Solaris product of Oracle Systems (component: X Window System).   The supported version that is affected is 11.4. Difficult to exploit vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris.  Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Oracle Solaris accessible data as well as  unauthorized read access to a subset of Oracle Solaris accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Solaris. CVSS 3.1 Base Score 4.2 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L).

## Affected

- `oracle_solaris 11.4`

## Remediation

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