CVE-2026-91348: High severity Oracle Oracle Solaris vulnerability

Published Oct 20, 2026

Updated

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Utility). Supported versions that are affected are 11.3 and 11.4. Easily exploitable vulnerability allows unauthenticated attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. Successful attacks of this vulnerability can result in takeover of Oracle Solaris. CVSS 3.1 Base Score 8.4 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Affected Software

3 affected components

Oracle Oracle Solaris=11.3, =11.4

Oracle Solaris=11.3

Oracle Solaris=11.4

Event History

Oct 20, 2026

CVE Published

via MITRE·09:25 PM

Data Sourced

via MITRE·09:25 PM

DescriptionSeverity

Data Sourced

via NVD·10:20 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

Which Solaris deployments are known to be affected?

Oracle Solaris supported versions 11.3 and 11.4 are affected. The issue is in the Utility component.

What level of access does an attacker need to exploit this issue?

The attacker must have logon access to the infrastructure where Oracle Solaris is running. The CVSS vector identifies the attack as local, with no privileges or user interaction required.

What could exploitation allow an attacker to do?

Successful exploitation can result in takeover of Oracle Solaris, with high impact to confidentiality, integrity, and availability.