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CVE-2021-2471

24
FAUCET Score

CVE-2021-2471 is a medium-severity vulnerability affecting Oracle MySQL Connector/J versions 8.0.26 and prior. It allows a high-privileged attacker with network access to compromise MySQL Connectors, leading to unauthorized access to critical data or a complete denial of service. While difficult to exploit, successful attacks can result in high confidentiality and availability impacts. Currently, there is no public exploit code available, and the vulnerability has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.9.0CPE matchmatch criteria
cpe:2.3:a:oracle:communications_cloud_native_core_console:1.9.0:*:*:*:*:*:*:*
1.8.0CPE matchmatch criteria
cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:*
1.15.0CPE matchmatch criteria
cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.15.0:*:*:*:*:*:*:*
1.7.0CPE matchmatch criteria
cpe:2.3:a:oracle:communications_cloud_native_core_security_edge_protection_proxy:1.7.0:*:*:*:*:*:*:*
>= 8.0.0, <= 8.0.26CPE matchmatch criteria
cpe:2.3:a:oracle:mysql_connectors:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
0.7
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
7.32%
Probability of exploitation in next 30 days
EPSS Percentile
93.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0732 is in the 99th percentile among its peer group of 687 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.2 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (15)

mavenpatch availablevia ghsa
Product: mysql:mysql-connector-javaFixed in: 8.0.27
microsoftpatch availablevia msrc
Product: 18974-16820Fixed in: 8.0.27-1
microsoftpatch availablevia msrc
Product: cm1 mysql 8.0.27-1 on CBL Mariner 1.0Fixed in: 8.0.27-1
redhatpatch availablevia redhat_api
Product: Red Hat build of Quarkus 2.2.5Fixed in: mysql-connector-java
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Fuse 7.11Fixed in: mysql-connector-java
View patch
redhatpatch availablevia redhat_api
Product: RHAF Camel-K 1.8Fixed in: mysql-connector-java
View patch
redhatpatch availablevia redhat_api
Product: RHINT Camel-Q 2.2.1
View patch
redhatpatch availablevia redhat_api
Product: RHPAM 7.13.0 asyncFixed in: mysql-connector-java
View patch
oraclevendor investigatingvia nvd_reference
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Satellite 6Fixed in: candlepin
redhatno patchvia redhat_api
Product: Red Hat build of QuarkusFixed in: mysql-connector-java
redhatno patchvia redhat_api
Product: Red Hat Integration Camel Quarkus 1Fixed in: mysql-connector-java
redhatno patchvia redhat_api
Product: Red Hat build of Debezium 1Fixed in: mysql-connector-java
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 7Fixed in: mysql-connector-java
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-metering-presto

Vendor Advisories (3)

mavenGHSA-w6f2-8wx4-47r5medium

Incorrect Authorization in MySQL Connector Java

May 24, 2022
redhatCVE-2021-2471Moderate

mysql-connector-java: unauthorized access to critical

Oct 20, 2021
microsoft2021-Oct/CVE-2021-2471Moderate

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).

Oct 12, 2021

References

oracle.com / security-alerts/cpuapr2022.html
Vendor Advisory
oracle.com / security-alerts/cpuoct2021.html
Vendor Advisory