# CVE-2025-14178: 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…

Source: https://junglewise.ai/threats/cve-2025-14178-in-php-versions-8-1-before-8-1-34-8-2-before-8-2-30-8-3-before-8  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-12-27  
License: CC BY 4.0 with a link back

CVE-2025-14178 · Severity: medium · CVSS 6.5 · Published 2025-12-27

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.

Technologies: [Php](https://junglewise.ai/threats/technologies/php-php). Vendors: [PHP](https://junglewise.ai/threats/vendors/php).

## Quick answers

**Is CVE-2025-14178 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-14178 being exploited in the wild.

**How severe is CVE-2025-14178?** Medium severity, with a CVSS score of 6.5, published 27 December 2025.

**Which products and versions are affected?** Php. The advisory does not name versions.

**Is there a fix for CVE-2025-14178?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-14178?** Check whether you run Php. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Php

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