CVE-2016-6620: n/a vulnerability

CVE-2016-6620: An issue was discovered in phpMyAdmin.

An issue was discovered in phpMyAdmin. Some data is passed to the PHP unserialize() function without verification that it's valid serialized data. The unserialization can result in code execution because of the interaction with object instantiation and autoloading. 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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 01:36 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2016-6620 affects legacy phpMyAdmin releases. Unchecked data can reach PHP unserialize(), which may allow code execution through object creation and autoloading. Organizations still running the listed old branches should treat this as a serious legacy exposure, especially if phpMyAdmin is reachable from untrusted networks. Exposure is limited to phpMyAdmin deployments on the affected legacy branches: 4.6.x before 4.6.4, 4.4.x before 4.4.15.8, and 4.0.x before 4.0.10.17. Internet-facing or broadly accessible administrative phpMyAdmin instances carry higher business risk. Prioritize remediation where phpMyAdmin is internet-facing, shared across teams, or connected to sensitive databases. The issue is old, but legacy administrative tools often persist unnoticed. Treat confirmed affected deployments as high priority for upgrade or retirement. Mitigation focus: Upgrade phpMyAdmin to 4.6.4, 4.4.15.8, 4.0.10.17, or later supported releases.; Apply Debian or Gentoo security package updates where those distributions manage phpMyAdmin.; Restrict phpMyAdmin access to trusted administrative networks or VPN paths..

Prepared: Jun 13, 2026, 13:16 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Execution behavior lookup

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CVE-2016-6620 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 11, 2016, 02:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
[debian-lts-announce] 20180706 [SECURITY] [DLA 1415-1] phpmyadmin security updateCVE reference · mailing-list, x_refsource_MLIST
https://www.phpmyadmin.net/security/PMASA-2016-43CVE reference · x_refsource_CONFIRM
GLSA-201701-32CVE reference · vendor-advisory, x_refsource_GENTOO

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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