(multibyte string) regular expression functions. By persuading a user to parse a specially crafted filename or sending malicious multibyte sequences, a remote attacker could trigger a buffer over-read. This could lead to sensitive information disclosure or, in some cases, a complete system compromise. Arbitrary Code Execution (ACE):
Migrate to a supported PHP version (8.2 or 8.3). php version 5640 vulnerabilities verified
The PHP development team has verified several vulnerabilities in PHP version 5.6.40, which are listed below: (multibyte string) regular expression functions
Need help validating your specific PHP build? Contact a web security firm for a penetration test—but expect them to immediately flag PHP 5.6.40 as a critical finding. in some cases
function, an attacker can manipulate objects to execute arbitrary code. Full server compromise. Verification: