CVE-2016-6662
A public proof of concept exists; no exploitation attested.
- Published2016-09-20
- WeaknessCWE-264
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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.
Timeline
dates in UTC- 2016-09-2018:59CVE publishedNVD
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-6662?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-6662?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 5.0 | = 5.0 | no fix published | NVD |
| 6.0 | = 6.0 | no fix published | NVD |
| 7.0 | = 7.0 | no fix published | NVD |
| 8.x | = 8 | no fix published | NVD |
| 9.x | = 9 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 7.3 | = 7.3 | no fix published | NVD |
| 7.4 | = 7.4 | no fix published | NVD |
| 7.5 | = 7.5 | no fix published | NVD |
| 7.6 | = 7.6 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 10.1 | ≥ 10.1.0, < 10.1.17 | 10.1.17 | NVD |
| 10.0 | ≥ 10.0.0, < 10.0.27 | 10.0.27 | NVD |
| 5.5 | ≥ 5.5.20, < 5.5.51 | 5.5.51 | NVD |
9 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
Advisories and patches
- www.oracle.comPatch · Vendor Advisory
- jira.mariadb.orgVendor Advisory
- mariadb.comRelease Notes · Vendor Advisory
- mariadb.comRelease Notes · Vendor Advisory
- mariadb.comRelease Notes · Vendor Advisory
Detection
read 2026-10-23 19:23 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- 6 repositories, unverifiedkonstantin-kelemen/mysqld_safe-CVE-2016-6662-patchmeersjo/ansible-mysql-cve-2016-6662KosukeShimofuji/CVE-2016-6662Ashrafdev/MySQL-Remote-Root-Code-Executionboompig/cve-2016-6662 PoC-in-GitHub
Sources
- NVDCVSS 3.09.8read 2026-10-23
- NVDCVSS 2.010read 2026-10-23
- NVDweakness (CWE)CWE-264read 2026-10-23
- FIRST EPSSEPSS score67.7 %read 2026-10-23
- PoC-in-GitHubproof of concept6read 2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2016-09-20
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2016-6662?
Is CVE-2016-6662 actively exploited?
What is the CVSS score for CVE-2016-6662?
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