CVE-2026-21935 Missing authorization in Oracle Solaris
High-privileged attackers can modify or read critical data in Oracle Solaris via a driver vulnerability requiring user interaction.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-21935?
CVE-2026-21935 is a medium-severity missing authorization vulnerability in Oracle Solaris, published on 20 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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).
Which versions are affected by CVE-2026-21935?
It affects 1 product.
Products include Oracle Solaris.
How do I fix CVE-2026-21935?
No fix has been published for CVE-2026-21935 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-21935 being exploited?
There is no known exploitation of CVE-2026-21935 in the wild and no public exploit code.
Other vulnerabilities in Oracle Solaris
Sources
Also known as GHSA-frv5-jjr8-238f.