CVE-2026-21928 Information disclosure in Oracle Solaris

Medium 5.3 Published 20 Jan 2026 Updated 3 Mar 2026

Unauthenticated attackers can read sensitive data from Oracle Solaris via network access, requiring immediate patching by system administrators.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-21928?

CVE-2026-21928 is a medium-severity vulnerability in Oracle Solaris, published on 20 Jan 2026. An attacker can exploit it over the internet without logging in, 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. Easily exploitable vulnerability allows unauthenticated attacker with network access via TCP to compromise Oracle Solaris. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle Solaris accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

Weakness: CWE-200

Which versions are affected by CVE-2026-21928?

It affects 1 product.

Products include Oracle Solaris.

How do I fix CVE-2026-21928?

No fix has been published for CVE-2026-21928 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-21928 being exploited?

There is no known exploitation of CVE-2026-21928 in the wild and no public exploit code.

All Oracle Solaris vulnerabilities

Sources

Also known as GHSA-242j-c957-58gr.