CVE-2024-21126

Name: CVE-2024-21126
Creator: NVD / NIST
Published: 2024-07-16T23:15:12.177+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.8/10EPSS 0.49%

Last modified Jun 17, 2026

CVE-2024-21126 is a medium-severity vulnerability rated 5.8/10 on the CVSS scale. Vulnerability in the Oracle Database Portable Clusterware component of Oracle Database Server. Supported versions that are affected are 19.3-19.23 and 21.3-21.14. EPSS estimates a 0.49% chance of exploitation in the next 30 days.

Description

Vulnerability in the Oracle Database Portable Clusterware component of Oracle Database Server. Supported versions that are affected are 19.3-19.23 and 21.3-21.14. Easily exploitable vulnerability allows unauthenticated attacker with network access via DNS to compromise Oracle Database Portable Clusterware. While the vulnerability is in Oracle Database Portable Clusterware, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Database Portable Clusterware. CVSS 3.1 Base Score 5.8 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L).

Metrics

CVSS 3.1

5.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

EPSS Probability

0.49%

38.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Oracle	Database Server	>= 19.3, <= 19.23
Oracle	Database Server	>= 21.3, <= 21.14

References

https://www.oracle.com/security-alerts/cpujul2024.htmlVendor Advisory
https://www.oracle.com/security-alerts/cpujul2024.htmlVendor Advisory

Timeline

Published: Jul 16, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-21126?

How severe is CVE-2024-21126?

CVE-2024-21126 has a CVSS score of 5.8/10 (MEDIUM severity). The EPSS model estimates a 0.49% probability of exploitation in the next 30 days.

How do I fix CVE-2024-21126?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-21126?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST