CVE-2026-21975

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

20/01/2026

Last modified:

20/01/2026

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).

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 4.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

4.50

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

https://www.oracle.com/security-alerts/cpujan2026.html