Is CVE-2016-6662 in the CISA KEV catalog?

No. CVE-2016-6662 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-6662?

CVE-2016-6662 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2016-6662?

CVE-2016-6662 has an EPSS score of 67.73% (99th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-6662?

Upgrade mysql-5.5 on ubuntu 14.04 to 5.5.52-0ubuntu0.14.04.1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2016-6662

CRITICALEPSS 99th pctl

9.8

CVSS v3

NVD

Description

Oracle MySQL through 5.5.52, 5.6.x through 5.6.33, and 5.7.x through 5.7.15; MariaDB before 5.5.51, 10.0.x before 10.0.27, and 10.1.x before 10.1.17; and Percona Server before 5.5.51-38.1, 5.6.x before 5.6.32-78.0, and 5.7.x before 5.7.14-7 allow local users to create arbitrary configurations and bypass certain protection mechanisms by setting general_log_file to a my.cnf configuration. NOTE: this can be leveraged to execute arbitrary code with root privileges by setting malloc_lib. NOTE: the affected MySQL version information is from Oracle's October 2016 CPU. Oracle has not commented on third-party claims that the issue was silently patched in MySQL 5.5.52, 5.6.33, and 5.7.15.

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

mysql-5.5Ubuntu

Fixed in:5.5.52-0ubuntu0.14.04.1USN-3078-1

mysql-5.7Ubuntu

Fixed in:5.7.15-0ubuntu0.16.04.1USN-3078-1

mysql-server-5.5Ubuntu

Fixed in:5.5.52-0ubuntu0.14.04.1USN-3078-1

mysql-server-5.7Ubuntu

Fixed in:5.7.15-0ubuntu0.16.04.1USN-3078-1

MariaDBWindows application

Affected:5.5.20 5.5.51Fixed in:5.5.51MariaDB Corporation Ab

Affected:10.0.0 10.0.27Fixed in:10.0.27MariaDB Corporation Ab

Affected:10.1.0 10.1.17Fixed in:10.1.17MariaDB Corporation Ab

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

67.73%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Related Vulnerabilities

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2012-1456	Medium	4.3	100%	-	-
CVE-2012-1459	Medium	4.3	100%	-	Fix
CVE-2012-1446	Medium	4.3	100%	-	-
CVE-2012-1443	Medium	4.3	100%	-	-
CVE-2012-1442	Medium	4.3	99%	-	-
CVE-2012-1457	Medium	4.3	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.