In PHP versions:8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1, a heap buffer overflow occurs in array_merge() when the total element count of packed arrays exceeds 32-bit limits or HT_MAX_SIZE, due to an integer overflow in the precomputation of element counts using zend_hash_num_elements(). This may lead to memory corruption or crashes and affect the integrity and availability of the target server.
{
"cna_assigner": "php",
"cwe_ids": [
"CWE-190",
"CWE-787"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/14xxx/CVE-2025-14178.json"
}{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "8.1.0"
},
{
"fixed": "8.1.34"
},
{
"introduced": "8.2.0"
},
{
"fixed": "8.2.30"
},
{
"introduced": "8.3.0"
},
{
"fixed": "8.3.29"
},
{
"introduced": "8.4.0"
},
{
"fixed": "8.4.16"
},
{
"introduced": "8.5.0"
},
{
"fixed": "8.5.1"
}
],
"source": "CPE_RANGE"
}