Input validation error in PHP - CVE-2007-1649
Published: July 29, 2017 / Updated: June 11, 2025
Vulnerability identifier: #VU110427
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2007-1649
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
PHP 5.2.1 allows context-dependent attackers to read portions of heap memory by executing certain scripts with a serialized data input string beginning with S:, which does not properly track the number of input bytes being processed.
Affected software
PHP
How to mitigate CVE-2007-1649
Install update from vendor's website.
PHP - update to 5.2.2