---
cve: "CVE-2025-14177"
severity: "MEDIUM"
cvss: 6.3
epss: "48%"
vendor: "PHP Group"
kev: false
exploited: false
published: "2025-12-27 20:15:40"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T15:24:14+02:00"
---

# CVE-2025-14177

> 6.3 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, the getimagesize() function may leak uninitialized heap memory into the APPn segments (e.g., APP1) when reading images in multi-chunk mode (such as via php://filter). This occurs due to a bug in php_read_stream_all_chunks() that overwrites the buffer without advancing the pointer, leaving tail bytes uninitialized. This may lead to information disclosure of sensitive heap data and affect the confidentiality of the target server.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 94abff74457effe4432f0bd49f5230aa11155dff (Commit)
- b233e9d0631bd14e775db4e7b93f6bb82fccf1a0 (Commit)

## Referenzen

- <https://github.com/php/php-src/security/advisories/GHSA-3237-qqm7-mfv7>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-14177) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_