Description
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).
Published: 2026-01-20
Score: 4.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service via Java VM crash
Action: Patch Immediately
AI Analysis

Impact

The vulnerability allows a high‑privileged authenticated user, who can reach the database over Oracle Net, to cause the Java VM component of Oracle Database Server to crash or hang. The effect is an availability loss; confidentiality or integrity are not affected. Successful exploitation also requires a separate attacker‑controlled user to interact with the system, making the attack more complex.

Affected Systems

Affected products are Oracle Database Server with Java VM for versions 19.3 through 19.29 and 21.3 through 21.20. These versions run the vulnerable Java VM component.

Risk and Exploitability

The CVSS 3.1 base score of 4.5 indicates moderate severity for availability. The EPSS score of under 1% suggests low overall exploitation probability, and the vulnerability is not listed in the CISA KEV catalog. Exploitation requires network access via Oracle Net, an authenticated user with high privileges, and a separate human interaction from another person, which reduces the likelihood of automated, widespread attacks.

Generated by OpenCVE AI on April 18, 2026 at 15:35 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest Oracle Database Server patch that includes the Java VM fix, as released in the CPU January 2026 advisory.
  • If patching immediately is not feasible, disable or remove the Java VM feature from the database startup configuration to prevent accidental crashes.
  • Continuously monitor database logs for Java VM crash events and configure alerts for abnormal terminations to ensure rapid incident response.

Generated by OpenCVE AI on April 18, 2026 at 15:35 UTC.

Tracking

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Advisories

No advisories yet.

History

Sat, 18 Apr 2026 16:00:00 +0000

Type Values Removed Values Added
Title Java VM Crash Vulnerability in Oracle Database Server

Thu, 29 Jan 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Oracle java Virtual Machine
CPEs cpe:2.3:a:oracle:java_virtual_machine:*:*:*:*:*:*:*:*
Vendors & Products Oracle java Virtual Machine

Wed, 21 Jan 2026 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-404
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 20 Jan 2026 22:15:00 +0000

Type Values Removed Values Added
Description 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).
First Time appeared Oracle
Oracle database - Java Vm
CPEs cpe:2.3:a:oracle:database_-_java_vm:*:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle database - Java Vm
References
Metrics cvssV3_1

{'score': 4.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H'}

Subscriptions

Oracle Database - Java Vm Java Virtual Machine
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-01-21T14:36:01.703Z

Reserved: 2026-01-05T18:07:34.716Z

Link: CVE-2026-21975

cve-icon Vulnrichment

Updated: 2026-01-21T14:35:43.806Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-20T22:16:00.707

Modified: 2026-01-29T14:46:56.653

Link: CVE-2026-21975

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-18T15:45:04Z

Weaknesses