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CVE-2025-14178

nvd nist
Published: Dec 27, 2025Modified: Jun 17, 2026

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8.2
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Exploitability: 3.9 / Impact: 4.2
Source: NVD

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.

Affected (5)

Products: Php: Php
Php
1 product
Php
Configuration A
5 vulnerable
Vulnerable SoftwareAffected Versions
Php
Php
From 8.1.0 to 8.1.34
Php
From 8.2.0 to 8.2.30
Php
From 8.3.0 to 8.3.29
Php
From 8.4.0 to 8.4.16
Php
From 8.5.0 to 8.5.1

Related CWEs

CWE-190
Integer Overflow or Wraparound
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
CWE-787
Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.

References (2)

Source: security@php.net
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.