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CVE-2020-14771

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: LDAP Auth...

2.2 LowFix available

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: LDAP Auth). Supported versions that are affected are 5.7.31 and prior and 8.0.21 and prior. Difficult to exploit 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 partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L).

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
High
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
Low

Exploit likelihood

1.31%Up 0.5 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 2.2

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: LDAP Auth). Supported versions that are affected are 5.7.31 and prior and 8.0.21 and prior. Difficult to exploit 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 partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L).

Record
CVE-2020-14771
CVSS 3.1
2.2 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
EUVDEUVD-2020-6907 2.2

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: LDAP Auth). Supported versions that are affected are 5.7.31 and prior and 8.0.21 and prior. Difficult to exploit 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 partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L).

Record
EUVD-2020-6907
CVSS 3.1
2.2 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-03
GitHub AdvisoriesGHSA-wjcx-2ffg-vcx9 2.2

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: LDAP Auth...

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: LDAP Auth). Supported versions that are affected are 5.7.31 and prior and 8.0.21 and prior. Difficult to exploit 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 partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L).

Record
GHSA-wjcx-2ffg-vcx9
CVSS 3.1
2.2 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
NVD 2.2

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: LDAP Auth). Supported versions that are affected are 5.7.31 and prior and 8.0.21 and prior. Difficult to exploit 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 partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L).

Record
CVE-2020-14771
CVSS 3.1
2.2 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0
3.5 LowAV:N/AC:M/Au:S/C:N/I:N/A:P
Updated
2026-11-02
OSV 2.2

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: LDAP Auth). Supported versions that are affected are 5.7.31 and prior and 8.0.21 and prior. Difficult to exploit 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 partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L).

Record
CVE-2020-14771
CVSS 3.1
2.2 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
OSVUBUNTU-CVE-2020-14771 2.2

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: LDAP Auth). Supported versions that are affected are 5.7.31 and prior and 8.0.21 and prior. Difficult to exploit 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 partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L).

Record
UBUNTU-CVE-2020-14771
CVSS 3.1
2.2 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
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
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-8.0
Ubuntu:20.04:LTS
 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
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-2020-14771 is a low vulnerability (CVSS 2.2) 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 1.31%, the 70th percentile. Fixed in mysql-5.7 5.7.32-0ubuntu0.16.04.1.

References

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