---
cve: "CVE-2025-9558"
severity: "HIGH"
cvss: 7.6
epss: "0.2%"
vendor: "zephyrproject-rtos"
kev: false
exploited: false
published: "2025-11-26 05:39:43"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T01:23:12+02:00"
---

# CVE-2025-9558

> 7.6 HIGH · 🧪 PoC

## Beschreibung

There is a potential OOB Write vulnerability in the gen_prov_start function in pb_adv.c. The full length of the received data is copied into the link.rx.buf receiver buffer without any validation on the data size.

## CVSS-Vektor

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

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

## Referenzen

- <https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-8wvr-688x-68vr>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-9558) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_