CVE-2026-87423: Medium severity Oracle Solaris vulnerability
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).
Affected Software
Event History
Frequently Asked Questions
Who is realistically exposed to this vulnerability?
Systems running the affected supported Oracle Solaris 11.4 version are exposed where a low-privileged user can log on to the infrastructure hosting Solaris. The issue affects the X Window System component.
What does an attacker need to exploit it?
An attacker needs local access and low-level privileges on the Oracle Solaris system. No user interaction is required, but exploitation is described as difficult.
What could a successful attack allow?
A successful attack could allow unauthorized reading of a subset of accessible Solaris data, unauthorized modification, insertion, or deletion of some accessible data, and a partial denial of service.