CVE-2026-21975: Oracle Java Virtual Machine

Medium severity, CVSS 4.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Vulnerability in the Java VM component of Oracle Database Server. Supported versions that are affected are 19.3-19.29 and 21.3-21.20. Easily exploitable vulnerability allows high privileged attacker having Authenticated User privilege with network access via Oracle Net to compromise Java VM. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Java VM. CVSS 3.1 Base Score 4.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H).

Affected products

• Oracle Java Virtual Machine: from 19.3, up to and including 19.29; from 21.3, up to and including 21.20

Published 2026-01-20. Last modified 2026-06-17.