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CVE-2020-2923

19
FAUCET Score

CVE-2020-2923 is an easily exploitable denial-of-service vulnerability affecting Oracle MySQL Server versions 8.0.19 and prior, specifically within the Optimizer component. A high-privileged attacker with network access can cause a complete and repeatable crash of the MySQL Server. With a CVSS 3.0 Base Score of 4.9, this vulnerability primarily impacts availability. There is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.0.0, <= 8.0.19CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
31CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
32CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
>= 7.3CPE matchmatch criteria
cpe:2.3:a:netapp:active_iq_unified_manager:*:*:*:*:*:windows:*:*

CVSS Data

CVSS version used by this source: 3.0

4.9MEDIUM

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.43%
Probability of exploitation in next 30 days
EPSS Percentile
82.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0243 is in the 92nd percentile among its peer group of 3,566 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.1 Extended Update SupportFixed in: mysql:8.0-8010020200828111645.c27ad7f8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: mysql:8.0-8020020200828111438.4cda2c84
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.0 Update Services for SAP SolutionsFixed in: mysql:8.0-8000020200828111808.f8e95b4e
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-mysql80-mysql-0:8.0.21-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mysql80-mysql-0:8.0.21-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-mysql80-mysql-0:8.0.21-1.el7
View patch
oraclevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2020-2923Moderate

mysql: Server: Optimizer unspecified vulnerability (CPU Apr 2020)

Apr 14, 2020

References

lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/77REFDB7DE4WNKQIRGZTF53RFBQOXQLC
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/SDGBQYS3A36S4CAZPV5YROHYXYZR6LAH
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/TSVLI36TYRTPQGCS24VZQUXCUFOUW4VQ
security.gentoo.org / glsa/202105-27
Third Party Advisory
security.netapp.com / advisory/ntap-20200416-0003
Third Party Advisory
usn.ubuntu.com / 4350-1
Third Party Advisory
oracle.com / security-alerts/cpuapr2020.html
Vendor Advisory