CVE-2021-2021
MEDIUMMySQL Server < 8.0.22 - Authenticated Denial of Service in Optimizer
Title source: llmDescription
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.22 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).
References (5)
Core 5
Core References
Vendor Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujan2021.html
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T7EAHJPWOOF4D6PEFLXW5IQWRRSZ3HRC/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CS5THZSGI7O2CZO44NWYE57AG2T7NK3K/
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210219-0003/
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202105-27
Scores
CVSS v3
4.9
EPSS
0.5180
EPSS Percentile
97.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
Status
published
Products (6)
fedoraproject/fedora
32
fedoraproject/fedora
33
netapp/oncommand_insight
netapp/oncommand_workflow_automation
netapp/snapcenter
oracle/mysql
8.0.0 - 8.0.22
Published
Jan 20, 2021
Tracked Since
Feb 18, 2026