CVE-2018-2781

20

FAUCET Score

CVE-2018-2781 is a denial-of-service vulnerability affecting Oracle MySQL Server versions 5.5.59 and prior, 5.6.39 and prior, and 5.7.21 and prior, specifically within the Optimizer subcomponent. This vulnerability allows a high-privileged attacker with network access to cause a complete and repeatable crash of the MySQL Server. With a CVSS 3.0 Base Score of 4.9 (Medium), it has a low attack complexity but requires high privileges, impacting only availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		7.0CPE matchmatch criteria	cpe:2.3:o:debian:debian_linux:7.0:::::::*
		8.0CPE matchmatch criteria	cpe:2.3:o:debian:debian_linux:8.0:::::::*
		9.0CPE matchmatch criteria	cpe:2.3:o:debian:debian_linux:9.0:::::::*
		>= 7.3CPE matchmatch criteria	cpe:2.3:a:netapp:active_iq_unified_manager::::::windows::*
		>= 9.5CPE matchmatch criteria	cpe:2.3:a:netapp:active_iq_unified_manager::::::vmware_vsphere::*

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

3.29%

Probability of exploitation in next 30 days

EPSS Percentile

87.2%

Percentile rank of EPSS score among Peer Group

As of 2026-07-28

Model: v2026.06.15

This CVE's current EPSS score of 0.0329 is in the 97th 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 (36)

oraclepatch availablevia nvd_reference

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: mariadb-1:5.5.60-1.el7_5

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-mysql56-mysql-0:5.6.40-1.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-mysql57-mysql-0:5.7.24-2.el6

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

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

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-mysql56-mysql-0:5.6.40-1.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-mysql57-mysql-0:5.7.24-2.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mysql56-mysql-0:5.6.40-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mysql57-mysql-0:5.7.24-1.el7

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

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

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-mysql56-mysql-0:5.6.40-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-mysql57-mysql-0:5.7.24-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-mysql56-mysql-0:5.6.40-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-mysql57-mysql-0:5.7.24-1.el7

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

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

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-mysql56-mysql-0:5.6.40-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-mysql57-mysql-0:5.7.24-1.el7

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

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

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-mysql57-mysql-0:5.7.24-1.el7

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

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

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 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 13 (Queens)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-2018-2781Moderate

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

References

access.redhat.com / errata/RHSA-2018:1254

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-2018:3655

Third Party Advisory

access.redhat.com / errata/RHSA-2019:1258

Third Party Advisory

lists.debian.org / debian-lts-announce/2018/04/msg00020.html

Mailing ListThird Party Advisory

lists.debian.org / debian-lts-announce/2018/06/msg00015.html

Mailing ListThird Party Advisory

security.gentoo.org / glsa/201908-24

Third Party Advisory

security.netapp.com / advisory/ntap-20180419-0002

Third Party Advisory

usn.ubuntu.com / 3629-1

Third Party Advisory

usn.ubuntu.com / 3629-2

Third Party Advisory

usn.ubuntu.com / 3629-3

Third Party Advisory

debian.org / security/2018/dsa-4176

Third Party Advisory

debian.org / security/2018/dsa-4341

Third Party Advisory

oracle.com / technetwork/security-advisory/cpuapr2018-3678067.html

PatchVendor Advisory

securityfocus.com / bid/103825

Third Party AdvisoryVDB Entry

securitytracker.com / id/1040698

Broken LinkThird Party AdvisoryVDB Entry