CVE-2026-91256

Awaiting Analysis Awaiting Analysis - Queue

Denial of Service in Oracle Solaris

Publication date: 2026-10-20

Last updated on: 2026-11-09

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

Probability:
Percentile:

Meta Information

Published

2026-10-20

Last Modified

2026-11-09

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-91256

EUVD

EUVD-2026-106511

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	solaris	11.4

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

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.

Detection Guidance

Detection requires checking for Oracle Solaris 11.4 systems with exposed HTTP services. Monitor for unusual network traffic or service crashes. No specific commands are provided in the available context.

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.

Hi! I’m here to help you understand CVE-2026-91256. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70

EPSS Chart

Security Radar

News mentioning this vulnerability

Loading related security news...