mysql: Server: Optimizer unspecified vulnerability (CPU Jan 2021)
Published Jan 20, 2021
4.9
MEDIUMCVSS 3.1
EPSS 2.15%
Description
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.19 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).
Affected products
-
- Version 8.0.19 and priorStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Oracle Corporation | MySQL Server | n/a |
|
Configuration 2
- n/a
- n/a
- n/a
Configuration 3
- 32
- 33
No data.
Red Hat Enterprise Linux 8
mysql:8.0-8020020200828111438.4cda2c84
Fixed · RHSA-2020:3732
Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions
mysql:8.0-8000020200828111808.f8e95b4e
Fixed · RHSA-2020:3755
Red Hat Enterprise Linux 8.1 Extended Update Support
mysql:8.0-8010020200828111645.c27ad7f8
Fixed · RHSA-2020:3757
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-mysql80-mysql-0:8.0.21-1.el7
Fixed · RHSA-2020:3518
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS
rh-mysql80-mysql-0:8.0.21-1.el7
Fixed · RHSA-2020:3518
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS
rh-mysql80-mysql-0:8.0.21-1.el7
Fixed · RHSA-2020:3518
Red Hat Enterprise Linux 6
mysql
Not affected
Red Hat Enterprise Linux 7
mariadb
Not affected
Red Hat Enterprise Linux 8
mariadb:10.3/mariadb
Not affected
Red Hat OpenStack Platform 10 (Newton)
mariadb-galera
Not affected
Red Hat OpenStack Platform 13 (Queens)
mariadb
Not affected
Red Hat Software Collections
rh-mariadb103-mariadb
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | mysql:8.0-8020020200828111438.4cda2c84 | Fixed | RHSA-2020:3732 |
| Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions | mysql:8.0-8000020200828111808.f8e95b4e | Fixed | RHSA-2020:3755 |
| Red Hat Enterprise Linux 8.1 Extended Update Support | mysql:8.0-8010020200828111645.c27ad7f8 | Fixed | RHSA-2020:3757 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-mysql80-mysql-0:8.0.21-1.el7 | Fixed | RHSA-2020:3518 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS | rh-mysql80-mysql-0:8.0.21-1.el7 | Fixed | RHSA-2020:3518 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS | rh-mysql80-mysql-0:8.0.21-1.el7 | Fixed | RHSA-2020:3518 |
| Red Hat Enterprise Linux 6 | mysql | Not affected | n/a |
| Red Hat Enterprise Linux 7 | mariadb | Not affected | n/a |
| Red Hat Enterprise Linux 8 | mariadb:10.3/mariadb | Not affected | n/a |
| Red Hat OpenStack Platform 10 (Newton) | mariadb-galera | Not affected | n/a |
| Red Hat OpenStack Platform 13 (Queens) | mariadb | Not affected | n/a |
| Red Hat Software Collections | rh-mariadb103-mariadb | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:N/I:N/A:C
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Sep 26, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.15% (0.02145) | 81.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.21% (0.02205) | 80.18th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.19% (0.00187) | 56.52th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.19% (0.00187) | 56.03th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.17% (0.00168) | 51.76th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.73% (0.06726) | 78.88th | v2 (v2022.01.01) |
| Feb 3, 2022 | 5.36% (0.05363) | 79.74th | v1 |
| Jan 6, 2022 | 5.36% (0.05363) | 79.54th | v1 |
| Jan 5, 2022 | 1.25% (0.01247) | 69.74th | v5 (v2026.06.15) |
| May 27, 2021 | 1.25% (0.01247) | 0.00th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
No CWE recorded.
References (10)
- https://access.redhat.com/security/cve/CVE-2021-2016 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1922420 Issue Tracking
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CS5THZSGI7O2CZO44NWYE57AG2T7NK3K/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T7EAHJPWOOF4D6PEFLXW5IQWRRSZ3HRC/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2021-2016
- https://security.gentoo.org/glsa/202105-27 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210219-0003/ x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2021-2016
- https://www.oracle.com/security-alerts/cpujan2021.html x_refsource_MISCVendor Advisory
- https://www.oracle.com/security-alerts/cpujan2021.html#AppendixMSQL
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2021-2016 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1922420 | Issue Tracking | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CS5THZSGI7O2CZO44NWYE57AG2T7NK3K/ | vendor-advisoryx_refsource_FEDORA | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T7EAHJPWOOF4D6PEFLXW5IQWRRSZ3HRC/ | vendor-advisoryx_refsource_FEDORA | |
| https://nvd.nist.gov/vuln/detail/CVE-2021-2016 | ||
| https://security.gentoo.org/glsa/202105-27 | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| https://security.netapp.com/advisory/ntap-20210219-0003/ | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2021-2016 | ||
| https://www.oracle.com/security-alerts/cpujan2021.html | x_refsource_MISCVendor Advisory | |
| https://www.oracle.com/security-alerts/cpujan2021.html#AppendixMSQL |
Change history (0)
No recorded changes yet.