Use-after-free in PHP - CVE-2016-4473
Published: June 16, 2017 / Updated: June 8, 2025
Vulnerability identifier: #VU110255
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-4473
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
/ext/phar/phar_object.c in PHP 7.0.7 and 5.6.x allows remote attackers to execute arbitrary code. NOTE: Introduced as part of an incomplete fix to CVE-2015-6833.
Affected software
PHP
How to mitigate CVE-2016-4473
Install update from vendor's website.
PHP - addressed in versions 5.6.23, 7.0.8