CVE-2025-14178

CVE Details

Release Date:	2025-12-27
Impact:	Moderate	What is this?

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.

See more information about CVE-2025-14178 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	6.5
Vector String:	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Version:	3.1
Attack Vector:	Network
Attack Complexity:	High
Privileges Required:	None
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	Low
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (libzip)	ELSA-2026-1412	2026-01-28
Oracle Linux version 8 (php)	ELSA-2026-1412	2026-01-28
Oracle Linux version 8 (php-pear)	ELSA-2026-1412	2026-01-28
Oracle Linux version 8 (php-pecl-apcu)	ELSA-2026-1412	2026-01-28
Oracle Linux version 8 (php-pecl-rrd)	ELSA-2026-1412	2026-01-28
Oracle Linux version 8 (php-pecl-xdebug3)	ELSA-2026-1412	2026-01-28
Oracle Linux version 8 (php-pecl-zip)	ELSA-2026-1412	2026-01-28
Oracle Linux version 9 (php)	ELSA-2026-1429	2026-01-28
Oracle Linux version 9 (php-pecl-apcu)	ELSA-2026-1429	2026-01-28
Oracle Linux version 9 (php-pecl-redis6)	ELSA-2026-1429	2026-01-28
Oracle Linux version 9 (php-pecl-rrd)	ELSA-2026-1429	2026-01-28
Oracle Linux version 9 (php-pecl-xdebug3)	ELSA-2026-1429	2026-01-28
Oracle Linux version 9 (php-pecl-zip)	ELSA-2026-1429	2026-01-28