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CVE-2021-2166

MEDIUMCVSS 4.9/10EPSS 4.64%

Last modified

CVE-2021-2166 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DML). Supported versions that are affected are 5.7.33 and prior and 8.0.23 and prior. EPSS estimates a 4.64% chance of exploitation in the next 30 days.

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DML). Supported versions that are affected are 5.7.33 and prior and 8.0.23 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Metrics

CVSS 3.1
4.9/10

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

EPSS Probability
4.64%

90.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
OracleMysql>= 5.7.0, <= 5.7.33
OracleMysql>= 8.0, <= 8.0.23
FedoraprojectFedora32
FedoraprojectFedora33
FedoraprojectFedora34
NetappActive Iq Unified ManagerAll versions
NetappOncommand InsightAll versions
NetappOncommand Workflow AutomationAll versions
NetappSnapcenterAll versions
MariadbMariadb>= 10.2.0, < 10.2.38
MariadbMariadb>= 10.3.0, < 10.3.29
MariadbMariadb>= 10.4.0, < 10.4.19
MariadbMariadb>= 10.5.0, < 10.5.10

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-2166?
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DML). Supported versions that are affected are 5.7.33 and prior and 8.0.23 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
How severe is CVE-2021-2166?
CVE-2021-2166 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 4.64% probability of exploitation in the next 30 days.
How do I fix CVE-2021-2166?
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.

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Source: NVD / NIST