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CVE-2020-14760

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer)....

5.5 MediumFix available

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 5.7.31 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 as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
High
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
Low
Availability
High

Exploit likelihood

2.03%Up 1.4 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 5.5

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 5.7.31 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 as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

Record
CVE-2020-14760
CVSS 3.1
5.5 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
Updated
2026-11-02
EUVDEUVD-2020-6896 5.5

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 5.7.31 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 as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

Record
EUVD-2020-6896
CVSS 3.1
5.5 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-gcmh-p8gg-xgch 5.5

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer)....

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 5.7.31 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 as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

Record
GHSA-gcmh-p8gg-xgch
CVSS 3.1
5.5 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
Updated
2026-11-02
NVD 5.5

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 5.7.31 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 as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

Record
CVE-2020-14760
CVSS 3.1
5.5 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:S/C:N/I:P/A:C
Updated
2026-11-02
OSV 5.5

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 5.7.31 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 as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

Record
CVE-2020-14760
CVSS 3.1
5.5 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
Updated
2026-11-02
OSVOESA-2022-1552 6.5

mysql5 security update

MySQL is a multi-user, multi-threaded SQL database server. MySQL is a client/server implementation consisting of a server daemon (mysqld) and many different client programs and libraries. The base package contains the standard MySQL client programs and generic MySQL files.

Security Fix(es):

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 5.7.31 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 as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).(CVE-2020-14760)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Encryption). Supported versions that are affected are 5.6.45 and prior and 5.7.27 and prior. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized read access to a subset of MySQL Server accessible data. CVSS 3.0 Base Score 3.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).(CVE-2019-2910)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Encryption). Supported versions that are affected are 5.6.45 and prior and 5.7.27 and prior. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized read access to a subset of MySQL Server accessible data. CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).(CVE-2019-2924)

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Audit Log). Supported versions that are affected are 5.7.26 and prior and 8.0.16 and prior. Difficult to exploit vulnerability allows low 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 3.0 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).(CVE-2019-2741)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Encryption). Supported versions that are affected are 5.6.45 and prior and 5.7.27 and prior. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized read access to a subset of MySQL Server accessible data. CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).(CVE-2019-2922)

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Audit Plug-in). Supported versions that are affected are 5.7.26 and prior and 8.0.16 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 update, insert or delete access to some of MySQL Server accessible data as well as unauthorized read access to a subset of MySQL Server accessible data. CVSS 3.0 Base Score 3.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N).(CVE-2019-2791)

Vulnerability in the MySQL…

Record
OESA-2022-1552
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2020-14760 5.5

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 5.7.31 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 as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

Record
UBUNTU-CVE-2020-14760
CVSS 3.1
5.5 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
Updated
2026-11-02
OSVUSN-4604-1 No score

mysql-5.7, mysql-8.0 vulnerabilities

Multiple security issues were discovered in MySQL and this update includes new upstream MySQL versions to fix these issues.

MySQL has been updated to 8.0.22 in Ubuntu 20.04 LTS and Ubuntu 20.10. Ubuntu 16.04 LTS and Ubuntu 18.04 LTS have been updated to MySQL 5.7.32.

In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes.

Please see the following for more information:

https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-32.html

https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-22.html

https://www.oracle.com/security-alerts/cpuoct2020.html

Record
USN-4604-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mysql5
openEuler:20.03-LTS-SP1
From an advisory covering 12 CVEs
 before 5.7.34-2.oe1
5.7.34-2.oe1
mysql5
openEuler:20.03-LTS-SP2
From an advisory covering 12 CVEs
 before 5.7.34-2.oe1
5.7.34-2.oe1
mysql5
openEuler:20.03-LTS-SP3
From an advisory covering 12 CVEs
 before 5.7.34-2.oe1
5.7.34-2.oe1
mysql-5.5
Ubuntu:14.04:LTS
 All versions, plus listed versions
5.5.32-0ubuntu75.5.34-0ubuntu15.5.34-0ubuntu25.5.35-0ubuntu15.5.35+dfsg-1ubuntu1
Show 20 moreShow less
5.5.37-0ubuntu0.14.04.15.5.38-0ubuntu0.14.04.15.5.40-0ubuntu0.14.04.15.5.41-0ubuntu0.14.04.15.5.43-0ubuntu0.14.04.15.5.44-0ubuntu0.14.04.15.5.46-0ubuntu0.14.04.25.5.47-0ubuntu0.14.04.15.5.49-0ubuntu0.14.04.15.5.50-0ubuntu0.14.04.15.5.52-0ubuntu0.14.04.15.5.53-0ubuntu0.14.04.15.5.54-0ubuntu0.14.04.15.5.55-0ubuntu0.14.04.15.5.57-0ubuntu0.14.04.15.5.58-0ubuntu0.14.04.15.5.59-0ubuntu0.14.04.15.5.60-0ubuntu0.14.04.15.5.61-0ubuntu0.14.04.15.5.62-0ubuntu0.14.04.1
 None known
mysql-5.7
Ubuntu:16.04:LTS
 before 5.7.32-0ubuntu0.16.04.1, plus listed versions
5.7.11-0ubuntu45.7.11-0ubuntu55.7.11-0ubuntu65.7.12-0ubuntu15.7.12-0ubuntu1.1
Show 19 moreShow less
5.7.13-0ubuntu0.16.04.25.7.15-0ubuntu0.16.04.15.7.16-0ubuntu0.16.04.15.7.17-0ubuntu0.16.04.15.7.17-0ubuntu0.16.04.25.7.18-0ubuntu0.16.04.15.7.19-0ubuntu0.16.04.15.7.20-0ubuntu0.16.04.15.7.21-0ubuntu0.16.04.15.7.22-0ubuntu0.16.04.15.7.23-0ubuntu0.16.04.15.7.24-0ubuntu0.16.04.15.7.25-0ubuntu0.16.04.25.7.26-0ubuntu0.16.04.15.7.27-0ubuntu0.16.04.15.7.28-0ubuntu0.16.04.25.7.29-0ubuntu0.16.04.15.7.30-0ubuntu0.16.04.15.7.31-0ubuntu0.16.04.1
5.7.32-0ubuntu0.16.04.1
percona-server-5.6
Ubuntu:16.04:LTS
 All versions, plus listed versions
5.6.22-rel71.0-0ubuntu25.6.22-rel71.0-0ubuntu45.6.22-rel71.0-0ubuntu4.1
 None known
percona-xtradb-cluster-5.6
Ubuntu:16.04:LTS
 All versions, plus listed versions
5.6.21-25.8-0ubuntu25.6.21-25.8-0ubuntu35.6.21-25.8-0ubuntu3.15.6.21-25.8-0ubuntu3.25.6.34-26.19-0ubuntu0.16.04.15.6.34-26.19-0ubuntu0.16.04.25.6.37-26.21-0ubuntu0.16.04.15.6.37-26.21-0ubuntu0.16.04.2
 None known
mysql-5.7
Ubuntu:18.04:LTS
 before 5.7.32-0ubuntu0.18.04.1, plus listed versions
5.7.19-0ubuntu15.7.20-0ubuntu0.17.10.15.7.20-1ubuntu15.7.21-1ubuntu15.7.22-0ubuntu18.04.1
Show 9 moreShow less
5.7.23-0ubuntu0.18.04.15.7.24-0ubuntu0.18.04.15.7.25-0ubuntu0.18.04.25.7.26-0ubuntu0.18.04.15.7.27-0ubuntu0.18.04.15.7.28-0ubuntu0.18.04.45.7.29-0ubuntu0.18.04.15.7.30-0ubuntu0.18.04.15.7.31-0ubuntu0.18.04.1
5.7.32-0ubuntu0.18.04.1
mysql-5.7
Ubuntu:16.04:LTS
From an advisory covering 48 CVEs
 before 5.7.32-0ubuntu0.16.04.1, plus listed versions
5.7.11-0ubuntu45.7.11-0ubuntu55.7.11-0ubuntu65.7.12-0ubuntu15.7.12-0ubuntu1.1
Show 19 moreShow less
5.7.13-0ubuntu0.16.04.25.7.15-0ubuntu0.16.04.15.7.16-0ubuntu0.16.04.15.7.17-0ubuntu0.16.04.15.7.17-0ubuntu0.16.04.25.7.18-0ubuntu0.16.04.15.7.19-0ubuntu0.16.04.15.7.20-0ubuntu0.16.04.15.7.21-0ubuntu0.16.04.15.7.22-0ubuntu0.16.04.15.7.23-0ubuntu0.16.04.15.7.24-0ubuntu0.16.04.15.7.25-0ubuntu0.16.04.25.7.26-0ubuntu0.16.04.15.7.27-0ubuntu0.16.04.15.7.28-0ubuntu0.16.04.25.7.29-0ubuntu0.16.04.15.7.30-0ubuntu0.16.04.15.7.31-0ubuntu0.16.04.1
5.7.32-0ubuntu0.16.04.1
mysql-5.7
Ubuntu:18.04:LTS
From an advisory covering 48 CVEs
 before 5.7.32-0ubuntu0.18.04.1, plus listed versions
5.7.19-0ubuntu15.7.20-0ubuntu0.17.10.15.7.20-1ubuntu15.7.21-1ubuntu15.7.22-0ubuntu18.04.1
Show 9 moreShow less
5.7.23-0ubuntu0.18.04.15.7.24-0ubuntu0.18.04.15.7.25-0ubuntu0.18.04.25.7.26-0ubuntu0.18.04.15.7.27-0ubuntu0.18.04.15.7.28-0ubuntu0.18.04.45.7.29-0ubuntu0.18.04.15.7.30-0ubuntu0.18.04.15.7.31-0ubuntu0.18.04.1
5.7.32-0ubuntu0.18.04.1
mysql-8.0
Ubuntu:20.04:LTS
From an advisory covering 48 CVEs
 before 8.0.22-0ubuntu0.20.04.2, plus listed versions
8.0.17-0ubuntu28.0.17-0ubuntu38.0.18-0ubuntu38.0.18-0ubuntu48.0.18-0ubuntu5
Show 7 moreShow less
8.0.19-0ubuntu28.0.19-0ubuntu38.0.19-0ubuntu48.0.19-0ubuntu58.0.20-0ubuntu0.20.04.18.0.21-0ubuntu0.20.04.38.0.21-0ubuntu0.20.04.4
8.0.22-0ubuntu0.20.04.2

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-14760 is a medium vulnerability (CVSS 5.5) in Oracle Mysql, published October 21, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.03%, the 81st percentile. Fixed in mysql-5.7 5.7.32-0ubuntu0.16.04.1.

References

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Left out here: the rest of 1 source description. The JSON record has them.

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