CVE-2016-9849

critical
Published 2016-12-11 · Modified 2026-05-06
CVSS v3
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2
7.5
VIR risk
9.8

Description

An issue was discovered in phpMyAdmin. It is possible to bypass AllowRoot restriction ($cfg['Servers'][$i]['AllowRoot']) and deny rules for username by using Null Byte in the username. All 4.6.x versions (prior to 4.6.5), 4.4.x versions (prior to 4.4.15.9), and 4.0.x versions (prior to 4.0.10.18) are affected.

Predictions

Exploit likelihood
97%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2016-9849

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://www.phpmyadmin.net/security/PMASA-2016-60

OS impact

OSVersionStatusFixed in
debian debianbookwormfixed4:4.6.5.1-1
debian debianbullseyefixed4:4.6.5.1-1
debian debiansidfixed4:4.6.5.1-1
debian debiantrixiefixed4:4.6.5.1-1

Application impact

VendorProductVersionsFixed
phpmyadminphpmyadmin4.0.0
phpmyadminphpmyadmin4.0.1
phpmyadminphpmyadmin4.0.2
phpmyadminphpmyadmin4.0.3
phpmyadminphpmyadmin4.0.4
phpmyadminphpmyadmin4.0.4.1
phpmyadminphpmyadmin4.0.4.2
phpmyadminphpmyadmin4.0.5
phpmyadminphpmyadmin4.0.6
phpmyadminphpmyadmin4.0.7
phpmyadminphpmyadmin4.0.8
phpmyadminphpmyadmin4.0.9
phpmyadminphpmyadmin4.0.10
phpmyadminphpmyadmin4.0.10.1
phpmyadminphpmyadmin4.0.10.2
phpmyadminphpmyadmin4.0.10.3
phpmyadminphpmyadmin4.0.10.4
phpmyadminphpmyadmin4.0.10.5
phpmyadminphpmyadmin4.0.10.6
phpmyadminphpmyadmin4.0.10.7
phpmyadminphpmyadmin4.0.10.8
phpmyadminphpmyadmin4.0.10.9
phpmyadminphpmyadmin4.0.10.10
phpmyadminphpmyadmin4.0.10.11
phpmyadminphpmyadmin4.0.10.12
phpmyadminphpmyadmin4.0.10.13
phpmyadminphpmyadmin4.0.10.14
phpmyadminphpmyadmin4.0.10.15
phpmyadminphpmyadmin4.0.10.16
phpmyadminphpmyadmin4.0.10.17
phpmyadminphpmyadmin4.6.0
phpmyadminphpmyadmin4.6.1
phpmyadminphpmyadmin4.6.2
phpmyadminphpmyadmin4.6.3
phpmyadminphpmyadmin4.6.4
phpmyadminphpmyadmin4.4.0
phpmyadminphpmyadmin4.4.1
phpmyadminphpmyadmin4.4.1.1
phpmyadminphpmyadmin4.4.2
phpmyadminphpmyadmin4.4.3
phpmyadminphpmyadmin4.4.4
phpmyadminphpmyadmin4.4.5
phpmyadminphpmyadmin4.4.6
phpmyadminphpmyadmin4.4.6.1
phpmyadminphpmyadmin4.4.7
phpmyadminphpmyadmin4.4.8
phpmyadminphpmyadmin4.4.9
phpmyadminphpmyadmin4.4.10
phpmyadminphpmyadmin4.4.11
phpmyadminphpmyadmin4.4.12
phpmyadminphpmyadmin4.4.13
phpmyadminphpmyadmin4.4.13.1
phpmyadminphpmyadmin4.4.14
phpmyadminphpmyadmin4.4.14.1
phpmyadminphpmyadmin4.4.15
phpmyadminphpmyadmin4.4.15.1
phpmyadminphpmyadmin4.4.15.2
phpmyadminphpmyadmin4.4.15.3
phpmyadminphpmyadmin4.4.15.4
phpmyadminphpmyadmin4.4.15.5
phpmyadminphpmyadmin4.4.15.6
phpmyadminphpmyadmin4.4.15.7
phpmyadminphpmyadmin4.4.15.8

References

CWEs

CWE-264

Verify integrity in audit chain (admin only). AS-IS.