Oracle Solaris 11.4 X Window System information disclosure

Summaryinfo

A vulnerability categorized as problematic has been discovered in Oracle Solaris 11.4. This affects an unknown part of the component X Window System. Such manipulation leads to information disclosure. This vulnerability is listed as CVE-2026-87423. The attack must be carried out locally. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Oracle Solaris 11.4 and classified as problematic. Affected by this issue is an unknown functionality 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. CVE summarizes:

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 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 4.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L).

The advisory is shared for download at oracle.com. This vulnerability is handled as CVE-2026-87423 since 09/08/2026. The exploitation is known to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

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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