CVE-2015-2571

15

FAUCET Score

CVE-2015-2571 is an unspecified vulnerability affecting Oracle MySQL Server versions 5.5.42 and earlier, and 5.6.23 and earlier, related to the Server Optimizer component. This vulnerability allows remote authenticated users to impact the availability of the affected database systems. With a CVSS score of 4.0, it is considered a low-severity issue, requiring authentication and having a low attack complexity, leading to partial denial of service. 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

Vendor	Product	Version(s)	CPE
		>= 5.5.0, <= 5.5.42CPE matchmatch criteria	cpe:2.3:a:oracle:mysql::::::::
		>= 5.6.0, <= 5.6.23CPE matchmatch criteria	cpe:2.3:a:oracle:mysql::::::::
		11.3CPE matchmatch criteria	cpe:2.3:o:oracle:solaris:11.3:::::::*
		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:::::::*

CVSS Data

CVSS version used by this source: 2.0

4.0MEDIUM

AV:N/AC:L/Au:S/C:N/I:N/A:P

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Exploitability Score

8.0

Impact Score

2.9

CvssVersion

2.0

Exploit Intelligence

EPSS Score

5.25%

Probability of exploitation in next 30 days

EPSS Percentile

91.7%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0525 is in the 98th percentile among its peer group of 21,974 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (23)

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUSFixed in: mariadb55-mariadb-0:5.5.44-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 5Fixed in: mysql55-mysql-0:5.5.45-1.el5

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: mariadb-1:5.5.44-1.el7_1

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: mysql55-mysql-0:5.5.45-1.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-mariadb100-mariadb-1:10.0.20-1.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: mariadb55-mariadb-0:5.5.44-1.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUSFixed in: mysql55-mysql-0:5.5.45-1.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUSFixed in: rh-mariadb100-mariadb-1:10.0.20-1.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUSFixed in: mariadb55-mariadb-0:5.5.44-1.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUSFixed in: mysql55-mysql-0:5.5.45-1.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUSFixed in: rh-mariadb100-mariadb-1:10.0.20-1.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUSFixed in: mariadb55-mariadb-0:5.5.44-1.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: mysql55-mysql-0:5.5.45-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mariadb100-mariadb-1:10.0.20-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: mariadb55-mariadb-0:5.5.44-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUSFixed in: mysql55-mysql-0:5.5.45-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUSFixed in: rh-mariadb100-mariadb-1:10.0.20-1.el7

oraclevendor investigatingvia nvd_reference

redhatvendor investigatingvia redhat_api

Product: Red Hat Enterprise Linux 6Fixed in: mysql

redhatvendor investigatingvia redhat_api

Product: Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)Fixed in: mariadb-galera

redhatvendor investigatingvia redhat_api

Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: mariadb-galera

redhatvendor investigatingvia redhat_api

Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: mariadb-galera

redhatno patchvia redhat_api

Product: Red Hat Software CollectionsFixed in: rh-mysql56-mysql

Vendor Advisories (1)

redhatCVE-2015-2571Moderate

mysql: unspecified vulnerability related to Server:Optimizer (CPU April 2015)

References

lists.opensuse.org / opensuse-security-announce/2015-05/msg00026.html

Mailing ListThird Party Advisory

rhn.redhat.com / errata/RHSA-2015-1628.html

Third Party Advisory

rhn.redhat.com / errata/RHSA-2015-1629.html

Third Party Advisory

rhn.redhat.com / errata/RHSA-2015-1647.html

Third Party Advisory

rhn.redhat.com / errata/RHSA-2015-1665.html

Third Party Advisory

mariadb.com / kb/en/mariadb/mariadb-5543-release-notes

Third Party Advisory

security.gentoo.org / glsa/201507-19

Third Party Advisory

debian.org / security/2015/dsa-3229

Third Party Advisory

debian.org / security/2015/dsa-3311

Third Party Advisory

mandriva.com / security/advisories

Broken Link

oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html

Vendor Advisory

oracle.com / technetwork/topics/security/bulletinoct2015-2511968.html

Third Party Advisory

oracle.com / technetwork/topics/security/cpuapr2015-2365600.html

Vendor Advisory

securityfocus.com / bid/74095

Third Party AdvisoryVDB Entry

securitytracker.com / id/1032121

Broken LinkThird Party AdvisoryVDB Entry

ubuntu.com / usn/USN-2575-1

Third Party Advisory