PHP 4.2.0 and 4.2.1 allows remote attackers to cause a denial of service and possibly execute arbitrary code via an HTTP POST request with certain arguments in a multipart/form-data form, which generates an error condition that is not properly handled and causes improper memory to be freed.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.049
EPSS Ranking 89.2%