wp-includes/class-wp-customize-widgets.php in the widget implementation in WordPress 3.9.x before 3.9.2 might allow remote attackers to execute arbitrary code via crafted serialized data.
http://openwall.com/lists/oss-security/2014/08/13/3
https://core.trac.wordpress.org/changeset/29389
https://wordpress.org/news/2014/08/wordpress-3-9-2/
Source: Mitre, NVD
Published: 2014-08-18
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High