CVE-2026-34281 Denial of service in Oracle Solaris

Medium 6.5 Published 21 Apr 2026 Updated 22 Apr 2026

A low-privileged attacker can cause a complete denial of service on Oracle Solaris by triggering a kernel hang or crash.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-34281?

CVE-2026-34281 is a medium-severity denial of service vulnerability in Oracle Solaris, published on 21 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Kernel). 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. While the vulnerability is in Oracle Solaris, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Solaris. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).

Weakness: CWE-400

Which versions are affected by CVE-2026-34281?

It affects 1 product.

Products include Oracle Solaris.

How do I fix CVE-2026-34281?

No fix has been published for CVE-2026-34281 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-34281 being exploited?

There is no known exploitation of CVE-2026-34281 in the wild and no public exploit code.

All Oracle Solaris vulnerabilities

Sources

Also known as GHSA-g44r-j9vh-rwm7.