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CVE-2020-14656

20
FAUCET Score

CVE-2020-14656 is a denial-of-service vulnerability affecting Oracle MySQL Server versions 8.0.20 and prior, specifically within the Server: Locking component. This vulnerability allows a highly privileged attacker with network access to cause a complete system hang or frequent crashes of the MySQL Server. With a CVSS 3.1 Base Score of 4.9 (Medium), it has a low attack complexity but requires high privileges for exploitation, impacting only availability. There is currently no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.9MEDIUM

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
1.93%
Probability of exploitation in next 30 days
EPSS Percentile
77.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0193 is in the 85th percentile among its peer group of 3,565 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 (11)

microsoftpatch availablevia msrc
Product: 19031-16820Fixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: cm1 mysql 8.0.26-1 on CBL Mariner 1.0Fixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 8.0.26-1
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
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 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 Enterprise Linux 8.1 Extended Update SupportFixed in: mysql:8.0-8010020200828111645.c27ad7f8
View patch
oraclevendor investigatingvia nvd_reference
View patch

Vendor Advisories (3)

microsoft2020-Aug/CVE-2020-14656

CVE-2020-14656

Aug 11, 2020
microsoft2020-Jul/CVE-2020-14656Moderate

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Locking). Supported versions that are affected are 8.0.20 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).

Jul 14, 2020
redhatCVE-2020-14656Moderate

mysql: Server: Locking unspecified vulnerability (CPU Jul 2020)

Jul 14, 2020

References

security.gentoo.org / glsa/202105-27
Third Party Advisory
security.netapp.com / advisory/ntap-20200717-0004
Third Party Advisory
usn.ubuntu.com / 4441-1
Third Party Advisory
oracle.com / security-alerts/cpujul2020.html
Vendor Advisory