What is CVE-2026-21975?

CVE-2026-21975 is a medium-severity vulnerability in Oracle Java Virtual Machine, classified under Improper Resource Shutdown or Release. CVSS score: 4.5/10. Published 2026-01-20.

How severe is CVE-2026-21975?

Medium severity. CVSS v3 base score is 4.5 out of 10.

Vulnerability in Oracle Java Virtual Machine

CVE-2026-21975

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).

EPSS: 0.002 (12.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.5 (Medium). 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
Oracle Corporation Database Server — versions 19.3, 21.3

Weakness classification (CWE)

CWE-404 — Improper Resource Shutdown or Release

References

secalert_us@oracle.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-21975?: CVE-2026-21975 is a medium-severity vulnerability in Oracle Java Virtual Machine, classified under Improper Resource Shutdown or Release. CVSS score: 4.5/10. Published 2026-01-20.
How severe is CVE-2026-21975?: Medium severity. CVSS v3 base score is 4.5 out of 10.