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CVE-2020-14540

15
FAUCET Score

CVE-2020-14540 is a denial-of-service vulnerability affecting Oracle MySQL Server versions 5.7.30 and prior, and 8.0.20 and prior, specifically within the DML component. This easily exploitable flaw allows a highly privileged attacker with network access to cause a complete crash or hang of the MySQL Server. With a CVSS 3.1 Base Score of 4.9 (Medium), its primary impact is on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.7.0, <= 5.7.30CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
>= 8.0.0, <= 8.0.20CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
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:-:*:*:*:*:*:*:*

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
2.15%
Probability of exploitation in next 30 days
EPSS Percentile
80.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0215 is in the 89th percentile among its peer group of 3,565 CVEs.

Social Chatter

No social media mentions found for this CVE.

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-2020-14540

CVE-2020-14540

Aug 11, 2020
microsoft2020-Jul/CVE-2020-14540Moderate

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DML). Supported versions that are affected are 5.7.30 and prior and 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-2020-14540Moderate

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

Jul 14, 2020

References

lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/CAI7GRYZ5265JVKHC6VXI57MNJDDB63C
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/HYQPCHGCVKFS3H226QQKZFQP56JYOQ3T
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/SA2XMR2ZY2BPR3VLTDVLNV74JL7TA7KL
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