How severe is CVE-2016-6624?

CVE-2016-6624 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2016-6624 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6624?

CVE-2016-6624 primarily affects Phpmyadmin. In total, 60 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-6624?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-6624 published?

CVE-2016-6624 was published on 2016-12-11 and last updated on 2026-06-17.

CVE-2016-6624

CVE-2016-6624 is a medium-severity vulnerability in Phpmyadmin with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-254.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-254
Affected product: Phpmyadmin
Published: 2016-12-11
Last modified: 2026-06-17

Description

An issue was discovered in phpMyAdmin involving improper enforcement of the IP-based authentication rules. When phpMyAdmin is used with IPv6 in a proxy server environment, and the proxy server is in the allowed range but the attacking computer is not allowed, this vulnerability can allow the attacking computer to connect despite the IP rules. All 4.6.x versions (prior to 4.6.4), 4.4.x versions (prior to 4.4.15.8), and 4.0.x versions (prior to 4.0.10.17) are affected.

Frequently asked questions

What is CVE-2016-6624?: An issue was discovered in phpMyAdmin involving improper enforcement of the IP-based authentication rules. When phpMyAdmin is used with IPv6 in a proxy server environment, and the proxy server is in the allowed range but the attacking computer is not allowed, this vulnerability can allow the attacking computer to connect despite the IP rules. All 4.6.x versions (prior to 4.6.4), 4.4.x versions (prior to 4.4.15.8), and 4.0.x versions (prior to 4.0.10.17) are affected.
How severe is CVE-2016-6624?: CVE-2016-6624 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2016-6624 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6624?: CVE-2016-6624 primarily affects Phpmyadmin. In total, 60 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-6624?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-6624 published?: CVE-2016-6624 was published on 2016-12-11 and last updated on 2026-06-17.

References

Affected products (60)

cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.2:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.3:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.4:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.4.1:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.4.2:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.5:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.6:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.7:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.8:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.9:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.1:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.2:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.3:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.4:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.5:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.6:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.7:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.8:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.9:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.10:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.11:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.12:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.13:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.14:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.15:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.0.10.16:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.4.0:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.4.1:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.4.2:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.4.3:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.4.4:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.4.5:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.4.6:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.4.6.1:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.4.7:*:*:*:*:*:*:*
cpe:2.3:a:phpmyadmin:phpmyadmin:4.4.8:*:*:*:*:*:*:*

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