---
cve: "CVE-2025-14178"
severity: "MEDIUM"
cvss: 6.5
epss: "44%"
vendor: "PHP Group"
kev: false
exploited: false
published: "2025-12-27 20:15:40"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T09:32:58+02:00"
---

# CVE-2025-14178

> 6.5 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 94abff74457effe4432f0bd49f5230aa11155dff (Commit)
- b233e9d0631bd14e775db4e7b93f6bb82fccf1a0 (Commit)

## Referenzen

- <https://github.com/php/php-src/security/advisories/GHSA-h96m-rvf9-jgm2>
- <https://lists.debian.org/debian-lts-announce/2026/01/msg00019.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-14178) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_