CVE-2016-9864: An issue was discovered in phpMyAdmin

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HIGH 7.5DOWNGRADE

CVE-2016-9864 is a high-severity flaw (CVSS 7.5) affecting phpmyadmin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in phpMyAdmin. With a crafted username or a table name, it was possible to inject SQL statements in the tracking functionality that would run with the privileges of the control user. This gives read and write access to the tables of the configuration storage database, and if the control user has the necessary privileges, read access to some tables of the MySQL database. All 4.6.x versions (prior to 4.6.5), 4.4.x versions (

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-89
Published	2016-12-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: phpmyadmin

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2016-12-11 03:00 UTCPublished CVE record published
2026-06-17 00:56 UTCUpdated Record last modified

phpmyadmin phpmyadmin DOWNGRADE

Affected: 4.6.0 · 4.6.1 · 4.6.2 · 4.6.3 · 4.6.4 · 4.4.0 · 4.4.1 · 4.4.1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.0

1. Check installed version

apt-cache policy phpmyadmin || rpm -q phpmyadmin || phpmyadmin --version

2. No fixed release: DOWNGRADE to a release before 4.0.0 (Debian / Ubuntu)

apt-cache madison phpmyadmin sudo apt install phpmyadmin=<VERSION_BEFORE_4.0.0> sudo apt-mark hold phpmyadmin

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list phpmyadmin sudo dnf downgrade phpmyadmin-<VERSION_BEFORE_4.0.0> sudo dnf versionlock add phpmyadmin

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2016-9864?

phpmyadmin: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2016-9864 being exploited?

CVE-2016-9864 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2016-9864 affect?

CVE-2016-9864 affects phpmyadmin. Severity is high (CVSS 7.5). An issue was discovered in phpMyAdmin. With a crafted username or a table name, it was possible to inject SQL statements in the tracking functionality that would run with the privileges of the control user. This gives read and write access

How urgent is CVE-2016-9864?

Priority 45/100. High severity

Software pages

MySQL vulnerabilities · phpMyAdmin vulnerabilities

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References

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