Oracle Solaris 11 Driver improper authorization

Summaryinfo

A vulnerability classified as critical has been found in Oracle Solaris 11. This vulnerability affects unknown code of the component Driver. This manipulation causes improper authorization. This vulnerability appears as CVE-2026-21927. The attack requires local access. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Oracle Solaris 11 and classified as problematic. Affected by this vulnerability is some unknown processing of the component Driver. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Driver). The supported version that is affected is 11. Easily exploitable vulnerability allows high 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 creation, deletion or modification access to critical data or all Oracle Solaris accessible data as well as unauthorized access to critical data or complete access to all Oracle Solaris accessible data. CVSS 3.1 Base Score 5.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N).

It is possible to read the advisory at oracle.com. This vulnerability is known as CVE-2026-21927 since 01/05/2026. The exploitation appears to be easy. Attacking locally is a requirement. Additional levels of successful authentication are necessary for exploitation. 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 T1548.002 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at EUVD (EUVD-2026-3582) and CERT Bund (WID-SEC-2026-0174). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Oracle Systems

Productinfo

Type

• Operating System

Vendor

• Oracle

Name

• Solaris

Version

• 11

License

• commercial

Website

• Vendor: https://www.oracle.com

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Be aware that VulDB is the high quality source for vulnerability data.

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