Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2018-2668

24
FAUCET Score

CVE-2018-2668 is a medium-severity vulnerability affecting the MySQL Server component (specifically the Optimizer subcomponent) in Oracle MySQL versions 5.5.58 and prior, 5.6.38 and prior, and 5.7.20 and prior, as well as products from Canonical, Debian, MariaDB, NetApp, and Red Hat. This easily exploitable flaw allows a low-privileged attacker with network access to cause a complete denial of service (crash or hang) of the MySQL Server. With a CVSS v3.0 score of 6.5, the primary impact is on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.5.0, <= 5.5.58CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
>= 5.6.0, <= 5.6.38CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
>= 5.7.0, <= 5.7.20CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
>= 5.5.0, < 5.5.59CPE matchmatch criteria
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
>= 10.0.0, < 10.0.34CPE matchmatch criteria
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.95%
Probability of exploitation in next 30 days
EPSS Percentile
89.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0395 is in the 97th percentile among its peer group of 21,974 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (33)

oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: mariadb-1:5.5.60-1.el7_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-mysql57-mysql-0:5.7.21-2.el6.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-mysql56-mysql-0:5.6.39-1.el6.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-mariadb102-galera-0:25.3.25-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-mariadb102-mariadb-1:10.2.22-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-mysql57-mysql-0:5.7.21-2.el6.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-mysql56-mysql-0:5.6.39-1.el6.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mysql57-mysql-0:5.7.21-2.el7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mysql56-mysql-0:5.6.39-1.el7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mariadb102-galera-0:25.3.25-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mariadb102-mariadb-1:10.2.22-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-mysql57-mysql-0:5.7.21-2.el7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-mysql56-mysql-0:5.6.39-1.el7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-mysql57-mysql-0:5.7.21-2.el7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-mysql56-mysql-0:5.6.39-1.el7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-mariadb102-galera-0:25.3.25-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-mariadb102-mariadb-1:10.2.22-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-mariadb102-galera-0:25.3.25-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-mariadb102-mariadb-1:10.2.22-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-mariadb102-galera-0:25.3.25-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-mariadb102-mariadb-1:10.2.22-1.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: mysql55-mysql
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: mysql
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: mariadb-galera
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: mariadb-galera
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 10 (Newton)Fixed in: mariadb-galera
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 11 (Ocata)Fixed in: mariadb-galera
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 12 (Pike)Fixed in: mariadb-galera
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: mariadb-galera
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka)Fixed in: mariadb-galera
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-mariadb100-mariadb
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-mariadb101-mariadb

Vendor Advisories (1)

redhatCVE-2018-2668Moderate

mysql: Server: Optimizer unspecified vulnerability (CPU Jan 2018)

Jan 16, 2018

References

access.redhat.com / errata/RHSA-2018:0586
Third Party Advisory
access.redhat.com / errata/RHSA-2018:0587
Third Party Advisory
access.redhat.com / errata/RHSA-2018:2439
Third Party Advisory
access.redhat.com / errata/RHSA-2018:2729
Third Party Advisory
access.redhat.com / errata/RHSA-2019:1258
Third Party Advisory
lists.debian.org / debian-lts-announce/2018/01/msg00024.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2018/06/msg00015.html
Mailing ListThird Party Advisory
security.netapp.com / advisory/ntap-20180117-0002
Third Party Advisory
usn.ubuntu.com / 3537-1
Third Party Advisory
usn.ubuntu.com / 3537-2
Third Party Advisory
debian.org / security/2018/dsa-4091
Third Party Advisory
debian.org / security/2018/dsa-4341
Third Party Advisory
oracle.com / technetwork/security-advisory/cpujan2018-3236628.html
PatchVendor Advisory
securityfocus.com / bid/102682
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040216
Broken LinkThird Party AdvisoryVDB Entry