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Vulnerability record · CVE-2016-6620 · published 11 December 2016

CVE-2016-6620: Phpmyadmin deserialization of untrusted data vulnerability

Phpmyadmin · 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.

9.8 CVSS 3.0 Critical EPSS 3.2% · top 12.3% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.0 base score, v2 7.5
3.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/95055
https://lists.debian.org/debian-lts-announce/2018/07/msg00006.html
https://security.gentoo.org/glsa/201701-32
https://www.phpmyadmin.net/security/PMASA-2016-43 PatchVendor Advisory
http://www.securityfocus.com/bid/95055
https://lists.debian.org/debian-lts-announce/2018/07/msg00006.html
https://security.gentoo.org/glsa/201701-32
https://www.phpmyadmin.net/security/PMASA-2016-43 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-6620), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.