Oracle Solaris 11.4 X Window System information disclosure

Summaryinfo

A vulnerability marked as problematic has been reported in Oracle Solaris 11.4. Impacted is an unknown function of the component X Window System. The manipulation leads to information disclosure. This vulnerability is documented as CVE-2026-91209. The attack needs to be performed locally. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Oracle Solaris 11.4. It has been rated as problematic. This issue affects an unknown code of the component X Window System. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

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).

It is possible to read the advisory at oracle.com. The identification of this vulnerability is CVE-2026-91209 since 09/15/2026. The exploitation is known to be easy. Attacking locally is a requirement. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Operating System

Vendor

• Oracle

Name

• Solaris

Version

• 11.4

License

• commercial

Website

• Vendor: https://www.oracle.com

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