CVE-2015-4757

Severity: low (CVSS 3.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 7.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-07-16 · updated 2026-06-17

Description

Unspecified vulnerability in Oracle MySQL Server 5.5.42 and earlier and 5.6.23 and earlier allows remote authenticated users to affect availability via unknown vectors related to Server : Optimizer.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 14.10, 15.04
Debian Linux: 8.0
MariaDB: from 5.5.0 before 5.5.43; from 10.0.0 before 10.0.18 — fixed in 10.0.18, 5.5.43
Opensuse: 13.1, 13.2
MySQL Server: from 5.5.0 through 5.5.42; from 5.6.0 through 5.6.23
RedHat Enterprise Linux Desktop: 5.0, 7.0
RedHat Enterprise Linux Eus: 7.1, 7.2, 7.3, 7.4, 7.5, 7.6 (+1)
RedHat Enterprise Linux Server: 5.0, 7.0
RedHat Enterprise Linux Server Aus: 7.3, 7.4, 7.6, 7.7
RedHat Enterprise Linux Server Tus: 7.3, 7.6, 7.7
RedHat Enterprise Linux Workstation: 5.0, 7.0

How to fix

Upgrade to a fixed version: MariaDB 10.0.18, 5.5.43. Check the vendor advisory for mitigations.

References

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