---
id: CVE-2026-91254
title: >-
  Vulnerability in the Oracle Solaris product of Oracle Systems (component:
  Kernel)
summary: >-
  Vulnerability in the Oracle Solaris product of Oracle Systems (component:
  Kernel).   The supported version that is affected is 11.4. Easily exploitable
  vulnerability allows unauthenticated attacker with network access via HTTP to
  comprom…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
vendor: Oracle Corporation
product: Oracle Solaris
affected:
  - oracle_solaris 11.4
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T21:24:54.921Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-91254'
references:
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
    label: Oracle Advisory
tags:
  - cve.org
ingestedAt: '2026-10-20T22:23:33.822Z'
---

## Overview

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Kernel).   The supported version that is affected is 11.4. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Solaris.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Solaris. 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).

## Affected

- `oracle_solaris 11.4`

## Remediation

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