CVE-2021-2471

Name: CVE-2021-2471
Creator: NVD / NIST
Published: 2021-10-20T11:16:17.117+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 7.32%

Last modified Jun 17, 2026

CVE-2021-2471 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/J). Supported versions that are affected are 8.0.26 and prior. EPSS estimates a 7.32% chance of exploitation in the next 30 days.

Description

Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/J). Supported versions that are affected are 8.0.26 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Connectors. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Connectors accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Connectors. CVSS 3.1 Base Score 5.9 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H).

Metrics

CVSS 3.1

5.9/10

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

EPSS Probability

7.32%

93.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Oracle	Communications Cloud Native Core Console	1.9.0
Oracle	Communications Cloud Native Core Network Slice Selection Function	1.8.0
Oracle	Communications Cloud Native Core Policy	1.15.0
Oracle	Communications Cloud Native Core Security Edge Protection Proxy	1.7.0
Oracle	Mysql Connectors	>= 8.0.0, <= 8.0.26
Quarkus	Quarkus	< 2.2.4
Quarkus	Quarkus	>= 2.3.0, < 2.6.0

References

https://www.oracle.com/security-alerts/cpuapr2022.htmlVendor Advisory
https://www.oracle.com/security-alerts/cpuoct2021.htmlVendor Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlVendor Advisory
https://www.oracle.com/security-alerts/cpuoct2021.htmlVendor Advisory

Timeline

Published: Oct 20, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-2471?

How severe is CVE-2021-2471?

CVE-2021-2471 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 7.32% probability of exploitation in the next 30 days.

How do I fix CVE-2021-2471?

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-2021-2471?

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

Scan your code now

Source: NVD / NIST