Security Advisory

CVE-2025-14178

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-12-27 19:27:41

Last updated 2026-01-24 11:04:01

Assigner php

State PUBLISHED

Description

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.

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