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NVD Vulnerability Details :
CVE-2025-14178
Modified
More InfoOfficial Page
Source-security@php.net
View Known Exploited Vulnerability (KEV) details
Published At-27 Dec, 2025 | 20:15
Updated At-24 Jan, 2026 | 11:15

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Primary3.18.2HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Type: Secondary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Type: Primary
Version: 3.1
Base score: 8.2
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CPE Matches
The PHP Group
php
>>php>>Versions from 8.1.0(inclusive) to 8.1.34(exclusive)
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
The PHP Group
php
>>php>>Versions from 8.2.0(inclusive) to 8.2.30(exclusive)
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
The PHP Group
php
>>php>>Versions from 8.3.0(inclusive) to 8.3.29(exclusive)
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
The PHP Group
php
>>php>>Versions from 8.4.0(inclusive) to 8.4.16(exclusive)
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
The PHP Group
php
>>php>>Versions from 8.5.0(inclusive) to 8.5.1(exclusive)
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-190Secondarysecurity@php.net
CWE-787Secondarysecurity@php.net
CWE-190Primarynvd@nist.gov
CWE ID: CWE-190
Type: Secondary
Source: security@php.net
CWE ID: CWE-787
Type: Secondary
Source: security@php.net
CWE ID: CWE-190
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/php/php-src/security/advisories/GHSA-h96m-rvf9-jgm2security@php.net
Vendor Advisory
https://lists.debian.org/debian-lts-announce/2026/01/msg00019.htmlaf854a3a-2127-422b-91ae-364da2661108
N/A
Hyperlink: https://github.com/php/php-src/security/advisories/GHSA-h96m-rvf9-jgm2
Source: security@php.net
Resource:
Vendor Advisory
Hyperlink: https://lists.debian.org/debian-lts-announce/2026/01/msg00019.html
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Change History
0Changes found
Details not found