CVE-2026-91537: High severity Oracle Solaris vulnerability

Published Oct 20, 2026
·
Updated

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Utility). The supported version that is affected is 11.4. Easily exploitable 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 takeover of Oracle Solaris. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Affected Software

2 affected components
Oracle Solaris=11.4
Oracle Solaris=11.4

Event History

Oct 20, 2026
CVE Published
via MITRE·09:26 PM
Data Sourced
via MITRE·09:26 PM
DescriptionSeverity
Data Sourced
via NVD·10:20 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

Who is exposed to this vulnerability?

Systems running the supported affected Oracle Solaris 11.4 version are exposed if a low-privileged attacker can log on to the infrastructure where Oracle Solaris is executing.

2

What does an attacker need to exploit it?

The attacker needs local access and low-level privileges on the affected Oracle Solaris environment. No user interaction is required, and the vulnerability is described as easily exploitable.

3

What is the potential impact of successful exploitation?

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

Contact

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