CVE-2026-91256

Received Received - Intake

Denial of Service in Oracle Solaris

Publication date: 2026-10-20

Last updated on: 2026-10-20

Assigner: Oracle

Description

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Services). The supported version that is affected is 11.4. Easily exploitable vulnerability allows low privileged 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 and unauthorized read access to a subset of Oracle Solaris accessible data. CVSS 3.1 Base Score 7.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-10-20

Generated

2026-10-21

AI Q&A

2026-10-21

EPSS Evaluated

N/A

NVD

CVE-2026-91256

Affected Vendors & Products

Vendor	Product	Version / Range
Oracle	Corporation	Oracle Solaris 11.4

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Solaris 11.4 that allows a low-privileged attacker with network access via HTTP to cause a denial of service (DOS) or crash the system. It also permits unauthorized read access to some data on the system.

Impact Analysis

An attacker could exploit this to make your Oracle Solaris system unresponsive or crash repeatedly, disrupting services. They could also access sensitive data stored on the system.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Compliance may be compromised due to potential data breaches.

Mitigation Strategies

Apply the latest Oracle Solaris patches from Oracle immediately to address the vulnerability in the Services component. Monitor Oracle's security advisories for updates and restrict network access to HTTP services where possible.

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